Best 1.20 Nether Fortress Seeds

Enter the Nether close to a fortress. Each seed includes coordinates and a map.

Java Edition 1.20 · 50 seeds checked against category criteria

These seeds use Java 1.20 (Trails & Tales) generation. Browse all 1.20 categories →

All 50 seeds for Java 1.20

Also has nearby
Predicted biome map of Java 1.20 seed 1186282777745184630 around estimated spawn Explore this seed
#1

1186282777745184630

A nether fortress is 45 nether blocks from the spawn portal anchor, at X 32, Z 32.

Estimated spawn
0, 0 (Savanna)
Stronghold
2,415 blocks
  • Nether Fortress45
  • Ruined Portal148
  • Village158

Nearby biomes: Savanna · Plains · Mangrove Swamp · Forest · Lukewarm Ocean · River

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Predicted biome map of Java 1.20 seed 3045111860377755616 around estimated spawn Explore this seed
#2

3045111860377755616

A nether fortress is 48 nether blocks from the spawn portal anchor, at X 0, Z -80.

Estimated spawn
-48, -256 (Desert)
Stronghold
2,054 blocks
  • Nether Fortress48
  • Ruined Portal173
  • Desert Temple316
  • Village432

Nearby biomes: Warm Ocean · Desert · Deep Lukewarm Ocean · River

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Predicted biome map of Java 1.20 seed 859904226800150386 around estimated spawn Explore this seed
#3

859904226800150386

A nether fortress is 56 nether blocks from the spawn portal anchor, at X 32, Z 0.

Estimated spawn
528, -352 (Snowy Plains)
Stronghold
1,554 blocks
  • Nether Fortress56
  • Ruined Portal374

Nearby biomes: Cold Ocean · Snowy Plains · Plains · Frozen Ocean · Frozen River · Deep Cold Ocean

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Predicted biome map of Java 1.20 seed 8108854391789902492 around estimated spawn Explore this seed
#4

8108854391789902492

A nether fortress is 62 nether blocks from the spawn portal anchor, at X 0, Z 64.

Estimated spawn
-16, 16 (Plains)
Stronghold
1,694 blocks
  • Nether Fortress62
  • Ruined Portal284
  • Woodland Mansion888

Nearby biomes: Plains · Forest · Sunflower Plains · River

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Predicted biome map of Java 1.20 seed -6294182511622236029 around estimated spawn Explore this seed
#5

-6294182511622236029

A nether fortress is 70 nether blocks from the spawn portal anchor, at X 16, Z 64.

Estimated spawn
112, -48 (Old Growth Pine Taiga)
Stronghold
2,327 blocks
  • Nether Fortress70
  • Ruined Portal403

Nearby biomes: Taiga · Forest · Cold Ocean · Old Growth Pine Taiga · Old Growth Spruce Taiga · Beach

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Predicted biome map of Java 1.20 seed 8451460296332175560 around estimated spawn Explore this seed
#6

8451460296332175560

A nether fortress is 82 nether blocks from the spawn portal anchor, at X 80, Z 16.

Estimated spawn
-16, 64 (Forest)
Stronghold
2,271 blocks
  • Nether Fortress82
  • Village256
  • Ruined Portal256

Nearby biomes: Taiga · Forest · Lush Caves · River · Cold Ocean · Stony Shore

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Predicted biome map of Java 1.20 seed -4381665374984203303 around estimated spawn Explore this seed
#7

-4381665374984203303

A nether fortress is 93 nether blocks from the spawn portal anchor, at X 80, Z 48.

Estimated spawn
0, 0 (Windswept Savanna)
Stronghold
1,600 blocks
  • Nether Fortress93
  • Ruined Portal132
  • Ocean Monument345

Nearby biomes: Ocean · Deep Ocean · Forest · Lukewarm Ocean · Plains · Beach

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Predicted biome map of Java 1.20 seed 7470833725141635051 around estimated spawn Explore this seed
#8

7470833725141635051

A nether fortress is 106 nether blocks from the spawn portal anchor, at X 16, Z -112.

Estimated spawn
-384, -224 (Jungle)
Stronghold
3,023 blocks
  • Nether Fortress106
  • Ruined Portal195

Nearby biomes: Lukewarm Ocean · Deep Lukewarm Ocean · Forest · River · Beach · Windswept Savanna

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Predicted biome map of Java 1.20 seed -5986122272179070396 around estimated spawn Explore this seed
#9

-5986122272179070396

A nether fortress is 107 nether blocks from the spawn portal anchor, at X 48, Z -96.

Estimated spawn
0, 0 (Forest)
Stronghold
2,660 blocks
  • Nether Fortress107
  • Ruined Portal240

Nearby biomes: Ocean · Cold Ocean · Forest · Plains · Lukewarm Ocean · Beach

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Predicted biome map of Java 1.20 seed -2519439577480543939 around estimated spawn Explore this seed
#10

-2519439577480543939

A nether fortress is 113 nether blocks from the spawn portal anchor, at X 80, Z -80.

Estimated spawn
0, 0 (Dripstone Caves)
Stronghold
2,058 blocks
  • Nether Fortress113
  • Ruined Portal179
  • Village340

Nearby biomes: Savanna · Dripstone Caves · Forest · Savanna Plateau · River · Stony Peaks

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Predicted biome map of Java 1.20 seed -6668201360799183847 around estimated spawn Explore this seed
#11

-6668201360799183847

A nether fortress is 122 nether blocks from the spawn portal anchor, at X -80, Z 80.

Estimated spawn
32, -64 (Savanna)
Stronghold
2,766 blocks
  • Nether Fortress122
  • Ancient City224
  • Ruined Portal226
  • Village416

Nearby biomes: Forest · Savanna · Dripstone Caves · Plains · Lukewarm Ocean · River

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Predicted biome map of Java 1.20 seed 1082052847984926328 around estimated spawn Explore this seed
#12

1082052847984926328

A nether fortress is 122 nether blocks from the spawn portal anchor, at X -80, Z -96.

Estimated spawn
-16, -16 (Old Growth Birch Forest)
Stronghold
2,522 blocks
  • Nether Fortress122
  • Ruined Portal365

Nearby biomes: Forest · Old Growth Birch Forest · Birch Forest · Dark Forest · River · Plains

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Predicted biome map of Java 1.20 seed 2327969196019067172 around estimated spawn Explore this seed
#13

2327969196019067172

A nether fortress is 123 nether blocks from the spawn portal anchor, at X 64, Z -112.

Estimated spawn
16, -48 (Forest)
Stronghold
1,647 blocks
  • Nether Fortress123
  • Ruined Portal375

Nearby biomes: Dark Forest · Plains · Forest · Ocean · River · Birch Forest

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Predicted biome map of Java 1.20 seed 8465671007628095538 around estimated spawn Explore this seed
#14

8465671007628095538

A nether fortress is 131 nether blocks from the spawn portal anchor, at X 32, Z -144.

Estimated spawn
-16, -144 (Desert)
Stronghold
2,702 blocks
  • Nether Fortress131
  • Ruined Portal244
  • Village260
  • Desert Temple480

Nearby biomes: Desert · River · Warm Ocean · Wooded Badlands · Badlands · Eroded Badlands

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Predicted biome map of Java 1.20 seed 8674642054917508417 around estimated spawn Explore this seed
#15

8674642054917508417

A nether fortress is 133 nether blocks from the spawn portal anchor, at X 128, Z 96.

Estimated spawn
208, 80 (Desert)
Stronghold
1,980 blocks
  • Village48
  • Nether Fortress133
  • Ruined Portal245
  • Desert Temple355

Nearby biomes: Warm Ocean · Lukewarm Ocean · Desert · Beach · Plains · Wooded Badlands

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Predicted biome map of Java 1.20 seed -4194244997996746635 around estimated spawn Explore this seed
#16

-4194244997996746635

A nether fortress is 135 nether blocks from the spawn portal anchor, at X 80, Z 112.

Estimated spawn
-32, 48 (Plains)
Stronghold
2,141 blocks
  • Nether Fortress135
  • Ruined Portal158
  • Village240

Nearby biomes: Cold Ocean · Plains · Deep Cold Ocean · Ocean · River · Forest

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Predicted biome map of Java 1.20 seed -5567779173575797682 around estimated spawn Explore this seed
#17

-5567779173575797682

A nether fortress is 140 nether blocks from the spawn portal anchor, at X 0, Z 144.

Estimated spawn
0, 32 (Taiga)
Stronghold
1,427 blocks
  • Nether Fortress140
  • Ruined Portal193
  • Village400

Nearby biomes: Snowy Taiga · Taiga · Lush Caves · Frozen River · Snowy Plains · Dripstone Caves

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Predicted biome map of Java 1.20 seed -79777074284453197 around estimated spawn Explore this seed
#18

-79777074284453197

A nether fortress is 151 nether blocks from the spawn portal anchor, at X 80, Z 128.

Estimated spawn
0, 0 (Sunflower Plains)
Stronghold
2,635 blocks
  • Nether Fortress151
  • Village285
  • Ruined Portal422
  • Ancient City445

Nearby biomes: Plains · River · Dripstone Caves · Forest · Sunflower Plains · Flower Forest

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Predicted biome map of Java 1.20 seed -5612521054256732158 around estimated spawn Explore this seed
#19

-5612521054256732158

A nether fortress is 169 nether blocks from the spawn portal anchor, at X 112, Z -128.

Estimated spawn
16, 0 (Desert)
Stronghold
1,366 blocks
  • Nether Fortress169
  • Village250
  • Ruined Portal336
  • Desert Temple472
  • Jungle Temple493

Nearby biomes: Desert · Jungle · Bamboo Jungle · River · Plains · Sparse Jungle

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Predicted biome map of Java 1.20 seed 6935403203176099586 around estimated spawn Explore this seed
#20

6935403203176099586

A nether fortress is 170 nether blocks from the spawn portal anchor, at X -112, Z -128.

Estimated spawn
32, -32 (Forest)
Stronghold
2,048 blocks
  • Nether Fortress170
  • Ruined Portal384
  • Village403

Nearby biomes: Plains · Forest · River · Old Growth Birch Forest · Ocean · Beach

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Predicted biome map of Java 1.20 seed 214988094108090963 around estimated spawn Explore this seed
#21

214988094108090963

A nether fortress is 173 nether blocks from the spawn portal anchor, at X -96, Z 144.

Estimated spawn
0, 0 (Forest)
Stronghold
1,967 blocks
  • Ancient City112
  • Nether Fortress173
  • Ruined Portal455

Nearby biomes: Forest · Cold Ocean · Deep Cold Ocean · Ocean · Plains · River

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Predicted biome map of Java 1.20 seed 550140422202362438 around estimated spawn Explore this seed
#22

550140422202362438

A nether fortress is 175 nether blocks from the spawn portal anchor, at X -144, Z 96.

Estimated spawn
16, 0 (Forest)
Stronghold
2,306 blocks
  • Nether Fortress175
  • Ruined Portal288
  • Ocean Monument333

Nearby biomes: Ocean · Forest · Savanna · River · Plains · Deep Lukewarm Ocean

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Predicted biome map of Java 1.20 seed -2776540473817565913 around estimated spawn Explore this seed
#23

-2776540473817565913

A nether fortress is 177 nether blocks from the spawn portal anchor, at X 16, Z 176.

Estimated spawn
0, 0 (Forest)
Stronghold
1,830 blocks
  • Nether Fortress177
  • Ruined Portal351

Nearby biomes: Birch Forest · Forest · Ocean · Old Growth Birch Forest · Dark Forest · Beach

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Predicted biome map of Java 1.20 seed -3477570843876948317 around estimated spawn Explore this seed
#24

-3477570843876948317

A nether fortress is 178 nether blocks from the spawn portal anchor, at X -176, Z 32.

Estimated spawn
0, 32 (Birch Forest)
Stronghold
1,511 blocks
  • Ruined Portal145
  • Nether Fortress178

Nearby biomes: Forest · River · Jungle · Birch Forest · Dark Forest · Dripstone Caves

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Predicted biome map of Java 1.20 seed 7435141628240037422 around estimated spawn Explore this seed
#25

7435141628240037422

A nether fortress is 179 nether blocks from the spawn portal anchor, at X 176, Z 32.

Estimated spawn
0, 0 (Forest)
Stronghold
2,591 blocks
  • Nether Fortress179
  • Village319
  • Ruined Portal330

Nearby biomes: Forest · Plains · River · Taiga · Old Growth Birch Forest

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Predicted biome map of Java 1.20 seed -3982750685222459034 around estimated spawn Explore this seed
#26

-3982750685222459034

A nether fortress is 180 nether blocks from the spawn portal anchor, at X -192, Z 16.

Estimated spawn
-96, 48 (Old Growth Birch Forest)
Stronghold
1,687 blocks
  • Ruined Portal163
  • Nether Fortress180
  • Village245

Nearby biomes: Forest · Dark Forest · Taiga · River · Plains · Lush Caves

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Predicted biome map of Java 1.20 seed 8165932653772453247 around estimated spawn Explore this seed
#27

8165932653772453247

A nether fortress is 184 nether blocks from the spawn portal anchor, at X 0, Z 176.

Estimated spawn
-64, -64 (Desert)
Stronghold
2,146 blocks
  • Nether Fortress184
  • Ruined Portal193
  • Desert Temple193
  • Village387

Nearby biomes: Desert · Sparse Jungle · River · Forest · Jungle

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Predicted biome map of Java 1.20 seed 4511416733120188300 around estimated spawn Explore this seed
#28

4511416733120188300

A nether fortress is 187 nether blocks from the spawn portal anchor, at X -96, Z -160.

Estimated spawn
0, 0 (Forest)
Stronghold
2,435 blocks
  • Nether Fortress187
  • Ruined Portal384

Nearby biomes: Forest · Cold Ocean · Ocean · River · Plains · Beach

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Predicted biome map of Java 1.20 seed 9215849383211419817 around estimated spawn Explore this seed
#29

9215849383211419817

A nether fortress is 188 nether blocks from the spawn portal anchor, at X 112, Z -192.

Estimated spawn
-144, -448 (Sparse Jungle)
Stronghold
1,863 blocks
  • Nether Fortress188
  • Ruined Portal338
  • Jungle Temple467

Nearby biomes: Lukewarm Ocean · Jungle · Savanna · River · Ocean · Bamboo Jungle

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Predicted biome map of Java 1.20 seed -4349612315849281399 around estimated spawn Explore this seed
#30

-4349612315849281399

A nether fortress is 192 nether blocks from the spawn portal anchor, at X 48, Z 128.

Estimated spawn
-304, -352 (Plains)
Stronghold
1,473 blocks
  • Nether Fortress192
  • Ruined Portal339
  • Ocean Monument416

Nearby biomes: Lukewarm Ocean · Deep Lukewarm Ocean · Sparse Jungle · Old Growth Birch Forest · Plains

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Predicted biome map of Java 1.20 seed -9076602487304700969 around estimated spawn Explore this seed
#31

-9076602487304700969

A nether fortress is 192 nether blocks from the spawn portal anchor, at X 208, Z 48.

Estimated spawn
176, 16 (Beach)
Stronghold
2,654 blocks
  • Ruined Portal143
  • Nether Fortress192

Nearby biomes: Ocean · Plains · Beach · Forest · Birch Forest · River

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Predicted biome map of Java 1.20 seed 7536565594893637820 around estimated spawn Explore this seed
#32

7536565594893637820

A nether fortress is 198 nether blocks from the spawn portal anchor, at X -192, Z 48.

Estimated spawn
0, 0 (Old Growth Pine Taiga)
Stronghold
2,420 blocks
  • Village129
  • Nether Fortress198
  • Ruined Portal288

Nearby biomes: Taiga · Old Growth Pine Taiga · Old Growth Spruce Taiga · Forest · River

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Predicted biome map of Java 1.20 seed -99321162195964734 around estimated spawn Explore this seed
#33

-99321162195964734

A nether fortress is 205 nether blocks from the spawn portal anchor, at X -80, Z -192.

Estimated spawn
16, -32 (Forest)
Stronghold
1,599 blocks
  • Nether Fortress205
  • Village288
  • Ruined Portal355

Nearby biomes: Forest · Plains · Birch Forest · Taiga · River · Old Growth Birch Forest

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Predicted biome map of Java 1.20 seed 2602055160518511065 around estimated spawn Explore this seed
#34

2602055160518511065

A nether fortress is 205 nether blocks from the spawn portal anchor, at X 80, Z -192.

Estimated spawn
32, -16 (Desert)
Stronghold
1,604 blocks
  • Ruined Portal129
  • Nether Fortress205

Nearby biomes: Desert · Badlands · Eroded Badlands · River · Warm Ocean · Stony Shore

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Predicted biome map of Java 1.20 seed 4273327471316034457 around estimated spawn Explore this seed
#35

4273327471316034457

A nether fortress is 208 nether blocks from the spawn portal anchor, at X -208, Z 0.

Estimated spawn
0, 0 (Sparse Jungle)
Stronghold
1,964 blocks
  • Ruined Portal128
  • Nether Fortress208
  • Jungle Temple431

Nearby biomes: Lukewarm Ocean · Sparse Jungle · Jungle · Beach · Forest · Plains

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Predicted biome map of Java 1.20 seed 668653040596236886 around estimated spawn Explore this seed
#36

668653040596236886

A nether fortress is 208 nether blocks from the spawn portal anchor, at X -80, Z -192.

Estimated spawn
0, 0 (Forest)
Stronghold
1,963 blocks
  • Nether Fortress208
  • Ruined Portal324

Nearby biomes: Forest · Savanna · Lukewarm Ocean · River · Old Growth Birch Forest · Plains

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Predicted biome map of Java 1.20 seed 180908716561969536 around estimated spawn Explore this seed
#37

180908716561969536

A nether fortress is 209 nether blocks from the spawn portal anchor, at X 208, Z 16.

Estimated spawn
0, 0 (Dripstone Caves)
Stronghold
1,590 blocks
  • Ancient City160
  • Village204
  • Nether Fortress209
  • Ruined Portal222

Nearby biomes: Dripstone Caves · Forest · Plains · Stony Peaks · Badlands

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Predicted biome map of Java 1.20 seed 3707207787564595807 around estimated spawn Explore this seed
#38

3707207787564595807

A nether fortress is 212 nether blocks from the spawn portal anchor, at X 80, Z 176.

Estimated spawn
-176, -80 (Forest)
Stronghold
1,404 blocks
  • Nether Fortress212
  • Ruined Portal222

Nearby biomes: Forest · Deep Ocean · Ocean · Birch Forest · River · Dripstone Caves

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Predicted biome map of Java 1.20 seed -6842779505077550654 around estimated spawn Explore this seed
#39

-6842779505077550654

A nether fortress is 215 nether blocks from the spawn portal anchor, at X -192, Z 96.

Estimated spawn
0, 0 (Jungle)
Stronghold
2,431 blocks
  • Nether Fortress215
  • Ruined Portal268

Nearby biomes: Mangrove Swamp · Lukewarm Ocean · Savanna · Jungle · Ocean · Beach

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Predicted biome map of Java 1.20 seed -8514178822048886992 around estimated spawn Explore this seed
#40

-8514178822048886992

A nether fortress is 225 nether blocks from the spawn portal anchor, at X -96, Z -208.

Estimated spawn
16, -48 (Plains)
Stronghold
1,379 blocks
  • Nether Fortress225
  • Ruined Portal227
  • Village258
  • Ocean Monument378

Nearby biomes: Ocean · Deep Ocean · Plains · Beach · Forest · River

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Predicted biome map of Java 1.20 seed 2639430352128960921 around estimated spawn Explore this seed
#41

2639430352128960921

A nether fortress is 227 nether blocks from the spawn portal anchor, at X -208, Z 48.

Estimated spawn
112, 0 (Taiga)
Stronghold
2,489 blocks
  • Nether Fortress227
  • Village233
  • Ruined Portal274

Nearby biomes: Snowy Taiga · Forest · Beach · Taiga · Cold Ocean · Snowy Plains

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Predicted biome map of Java 1.20 seed 7127370120978576614 around estimated spawn Explore this seed
#42

7127370120978576614

A nether fortress is 227 nether blocks from the spawn portal anchor, at X 224, Z 64.

Estimated spawn
48, 16 (Forest)
Stronghold
2,473 blocks
  • Nether Fortress227
  • Ruined Portal395
  • Village437

Nearby biomes: Dripstone Caves · Forest · Plains · Taiga · Snowy Plains · River

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Predicted biome map of Java 1.20 seed -1948714183689010483 around estimated spawn Explore this seed
#43

-1948714183689010483

A nether fortress is 227 nether blocks from the spawn portal anchor, at X 240, Z 48.

Estimated spawn
160, -48 (Snowy Beach)
Stronghold
2,166 blocks
  • Nether Fortress227
  • Ruined Portal334

Nearby biomes: Frozen Ocean · Snowy Beach · Snowy Taiga · Snowy Plains · Ice Spikes · Deep Frozen Ocean

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Predicted biome map of Java 1.20 seed 6598114290533041584 around estimated spawn Explore this seed
#44

6598114290533041584

A nether fortress is 228 nether blocks from the spawn portal anchor, at X 144, Z 224.

Estimated spawn
448, 112 (Beach)
Stronghold
2,395 blocks
  • Nether Fortress228
  • Ruined Portal273

Nearby biomes: Lukewarm Ocean · Deep Ocean · Deep Lukewarm Ocean · Ocean · Beach · Jungle

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Predicted biome map of Java 1.20 seed 7401797611352126043 around estimated spawn Explore this seed
#45

7401797611352126043

A nether fortress is 234 nether blocks from the spawn portal anchor, at X 144, Z -176.

Estimated spawn
16, 80 (Plains)
Stronghold
1,483 blocks
  • Village165
  • Ruined Portal225
  • Nether Fortress234

Nearby biomes: Ocean · Deep Ocean · Plains · River · Forest · Beach

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Predicted biome map of Java 1.20 seed 3382839051762693341 around estimated spawn Explore this seed
#46

3382839051762693341

A nether fortress is 238 nether blocks from the spawn portal anchor, at X 160, Z 176.

Estimated spawn
0, 0 (Forest)
Stronghold
1,775 blocks
  • Nether Fortress238
  • Ruined Portal413

Nearby biomes: Forest · Plains · River · Birch Forest · Sunflower Plains

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Predicted biome map of Java 1.20 seed -610076117942900207 around estimated spawn Explore this seed
#47

-610076117942900207

A nether fortress is 245 nether blocks from the spawn portal anchor, at X 240, Z 48.

Estimated spawn
0, 0 (Dripstone Caves)
Stronghold
1,743 blocks
  • Nether Fortress245
  • Ruined Portal264

Nearby biomes: Dripstone Caves · Snowy Taiga · Taiga · River · Forest · Snowy Plains

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Predicted biome map of Java 1.20 seed -180080456781384061 around estimated spawn Explore this seed
#48

-180080456781384061

A nether fortress is 246 nether blocks from the spawn portal anchor, at X -256, Z 16.

Estimated spawn
-80, 176 (Jungle)
Stronghold
1,933 blocks
  • Ruined Portal170
  • Nether Fortress246

Nearby biomes: Dark Forest · Lukewarm Ocean · Deep Lukewarm Ocean · River · Jungle · Lush Caves

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Predicted biome map of Java 1.20 seed -4468351979711879165 around estimated spawn Explore this seed
#49

-4468351979711879165

A nether fortress is 246 nether blocks from the spawn portal anchor, at X -176, Z -176.

Estimated spawn
-48, 16 (Taiga)
Stronghold
1,673 blocks
  • Nether Fortress246
  • Ruined Portal497

Nearby biomes: Cold Ocean · Deep Cold Ocean · Taiga · Forest · Plains · River

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Predicted biome map of Java 1.20 seed -6421030890195543236 around estimated spawn Explore this seed
#50

-6421030890195543236

A nether fortress is 247 nether blocks from the spawn portal anchor, at X 176, Z -176.

Estimated spawn
16, 0 (Mangrove Swamp)
Stronghold
1,472 blocks
  • Nether Fortress247
  • Jungle Temple427
  • Ruined Portal431

Nearby biomes: Mangrove Swamp · Jungle · Bamboo Jungle · Dark Forest · Dripstone Caves · Forest

Open in Seed Map →

About these 1.20 seeds

A predicted nether fortress within 400 nether blocks of the spawn portal anchor is required for every seed in this category. Lists are computed separately for the version printed on each card.

1.20 (Trails & Tales) added cherry groves and buried trail ruins to world generation, and 1.20.1 is one of the most-pinned modpack versions — plenty of worlds are still being started on it. Every seed below was verified on 1.20's own generation, not back-ported from a newer list: 1.21 changed worldgen (trial chambers, then the pale garden), so a list verified there can't honestly claim these coordinates.

Verified for Java Edition 1.20 (Trails & Tales). Biomes, terrain and structures are identical across 1.20 – 1.20.6, so any 1.20.x world matches these maps — the only generation change in the patches (1.20.2 made diamond ore more common in the deepslate layers) doesn't affect anything these cards measure.

For the current Java 26.3 release, see the main nether fortress seeds — or the same list for 26.3 · 1.21.4 · 1.19 · 1.18 · 1.16. All 1.20 lists live under best 1.20 seeds.

Frequently asked questions

How is this different from the main nether fortress seeds page?
These seeds are computed for Java 1.20. The main nether fortress seeds list targets Java 26.3. Match the version on the card; older versions can generate different biomes and structure positions.
Which releases do these seeds work on?
The whole 1.20 line — 1.20 through 1.20.6, including 1.20.1 modpacks: biomes, terrain and structure positions are identical across the patches. (The one generation change, 1.20.2 making diamond ore more common in the deepslate layers, doesn't move anything on these cards.) On 1.21+ the same seed generates almost the same world, but trial chambers (1.21) and pale gardens (1.21.4) appear and a few placements shift, so use our main lists for current versions.
Do these seeds work on Bedrock Edition?
No — Java and Bedrock generate different worlds from the same seed. These lists are Java Edition only.