Minecraft 1.21 Ancient City Seeds

In our 1,800 Java 1.21.11 seeds, 189 held an ancient city inside 400 blocks of spawn. The nearest city is only 16 blocks away and the average hit is about 76. The top seed starts in a forest, so you can build a surface base and descend through the dark.

1.21 ancient city: 20 of 1,800 tested seeds · Java 1.21.11 · 2026-10-31

1. 1
   6024032941200753846S94/100

   Spawn in forest at X 0, Z 0

   • Ancient City 32 blocks X 32, Z 0
   • Stronghold 1581 blocks
   • Village 242 blocks
   Open mapCopy seed
2. 2
   -3122187595382956522S86/100

   Spawn in meadow at X 0, Z 0

   • Ancient City 32 blocks X 32, Z 0
   • Stronghold 1787 blocks
   • Village 244 blocks
   Open mapCopy seed
3. 3
   2356863228746281137A68/100

   Spawn in meadow at X 0, Z 0

   • Ancient City right at spawn X 16, Z 0
   • Stronghold 1610 blocks
   • Village 874 blocks
   Open mapCopy seed
4. 4
   8280476589540192598S83/100

   Spawn in old growth pine taiga at X 16, Z 0

   • Ancient City 48 blocks X 64, Z 0
   • Stronghold 1424 blocks
   • Village 431 blocks
   Open mapCopy seed
5. 5
   5275113565439283121S84/100

   Spawn in taiga at X 48, Z 0

   • Ancient City 64 blocks X 112, Z 0
   • Stronghold 1579 blocks
   • Village 565 blocks
   Open mapCopy seed
6. 6
   -5536442889847254589S82/100

   Spawn in birch forest at X 0, Z 0

   • Ancient City 66 blocks X 16, Z 64
   • Stronghold 1681 blocks
   • Village 372 blocks
   Open mapCopy seed
7. 7
   -8998557608694907934A74/100

   Spawn in snowy taiga at X 0, Z 0

   • Ancient City 64 blocks X 0, Z 64
   • Stronghold 1832 blocks
   • Village 476 blocks
   Open mapCopy seed
8. 8
   -6045146677971180050S81/100

   Spawn in dark forest at X 0, Z 16

   • Ancient City 72 blocks X 32, Z 80
   • Stronghold 1693 blocks
   • Village 942 blocks
   Open mapCopy seed
9. 9
   5802665937780340761S81/100

   Spawn in jungle at X 0, Z 0

   • Ancient City 72 blocks X 32, Z 64
   • Stronghold 1913 blocks
   • Village 419 blocks
   Open mapCopy seed
10. 10
    326241097590988720B60/100

    Spawn in badlands at X 112, Z 0

    • Ancient City 58 blocks X 160, Z 32
    • Stronghold 1503 blocks
    • Village 784 blocks
    Open mapCopy seed
11. 11
    5815064563180375619A76/100

    Spawn in forest at X 0, Z 0

    • Ancient City 82 blocks X 16, Z 80
    • Stronghold 1833 blocks
    • Village 497 blocks
    Open mapCopy seed
12. 12
    4704837674341480563S83/100

    Spawn in plains at X 16, Z -48

    • Ancient City 91 blocks X 80, Z 16
    • Stronghold 1891 blocks
    • Village 371 blocks
    Open mapCopy seed
13. 13
    4004397604304851474A79/100

    Spawn in jungle at X 0, Z 0

    • Ancient City 93 blocks X 80, Z 48
    • Stronghold 1685 blocks
    • Village 429 blocks
    Open mapCopy seed
14. 14
    -2871949138316907104A79/100

    Spawn in bamboo jungle at X 0, Z 0

    • Ancient City 93 blocks X 80, Z 48
    • Stronghold 1724 blocks
    • Village 737 blocks
    Open mapCopy seed
15. 15
    -1116462069786633457B62/100

    Spawn in badlands at X 0, Z 0

    • Ancient City 82 blocks X 80, Z 16
    • Stronghold 1889 blocks
    • Village 866 blocks
    Open mapCopy seed
16. 16
    -57201140167822717A75/100

    Spawn in snowy plains at X -16, Z 64

    • Ancient City 102 blocks X 64, Z 128
    • Stronghold 1518 blocks
    • Village 523 blocks
    Open mapCopy seed
17. 17
    -2529376640304608761A79/100

    Spawn in forest at X -16, Z -16

    • Ancient City 107 blocks X 32, Z 80
    • Stronghold 1732 blocks
    • Village 914 blocks
    Open mapCopy seed
18. 18
    5638113925530419854A73/100

    Spawn in snowy plains at X -512, Z -128

    • Ancient City 107 blocks X -608, Z -176
    • Stronghold 1745 blocks
    • Village 530 blocks
    Open mapCopy seed
19. 19
    -6875400920938049271A73/100

    Spawn in old growth pine taiga at X -144, Z 144

    • Ancient City 107 blocks X -240, Z 96
    • Stronghold 1469 blocks
    • Village 877 blocks
    Open mapCopy seed
20. 20
    -8169045470443604212S86/100

    Spawn in forest at X 16, Z -48

    • Ancient City 125 blocks X 96, Z -144
    • Stronghold 1454 blocks
    • Village 342 blocks
    Open mapCopy seed

Deep Dark meets trial chambers in 1.21

On 1.21, the deep layers of the world have two famous structures: the ancient city in the deep dark and the trial chamber higher up. A seed with a city only 16 blocks away is a clean way to try both.

Use the lower tier first for your gear:

• Clear a trial chamber for armour, arrows and wind charges.
• Craft potions of night vision, if you have them, or bring a lot of torches.
• Pack wool or carpet, which blocks vibrations from sculk sensors.

Then descend into the deep dark. The city is dim, dangerous and loud with echoes. Shriekers raise warnings each time you trigger a sensor, and the warden arrives on the fourth warning.

In 1.21 you can also try the mace: smashing from above gives huge damage, though even a mace does not make a warden fight easy.

Looting the forest start's neighbour below

A forest spawn means wood, apples and animals are easy, which means you can focus your inventory on the dive. Set up the surface base first with a bed, furnace and chests.

Inside the city, you want the central chests and the outer ring chests. Typical loot includes:

• Enchanted golden apples and golden carrots
• Diamond tools and horse armour
• Books with Mending, Swift Sneak and Soul Speed
• Disc fragments and recovery compass parts

Work from the edges inward and sneak constantly. If a shrieker goes off, back away and place blocks to cut sight lines. Do not use a bow in the middle of the city, since arrows and impact noise travel as vibrations.

Once you leave, light the entrance with torches so you can find it again. A path of lit torches also helps if you need to run for your life.

Read how the seed hunter picks and rates seeds.

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