Minecraft 1.21 seeds
Checked with Seeder's engine on .
Tricky Trials update. Now with trial chambers, full of breezes and vaults. And you can smash your friends with the mace. Drops started after this, adding the pale garden (1.21.4) and dried ghasts (1.21.6).
- New biomes
- Pale Garden
- New structures
- Trial Chamber
These seeds were checked on 1.21.11, the last 1.21 version. On 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.6 and 1.21.9 the biomes can differ, so pick the exact version your world uses on the map.

1 Six-pack: From spawn: a desert village 116 blocks east, a ruined portal 64 blocks south, a desert temple 187 blocks west, a pillager outpost 176 blocks north, a trial chamber 218 blocks south-east and an ancient city 241 blocks north.
Seed-8574436333040367599
What X, Z Distance VillageDesert village 112, 32 116 blocks Ruined PortalDesert portal 0, 64 64 blocks Desert Pyramid -176, 64 187 blocks Outpost 0, -176 176 blocks Trial Chamber 176, 128 218 blocks Ancient City 16, -240 241 blocks Shipwreck -96, 288 304 blocks Stronghold -1596, 4 1.6k blocks Spawn in an eroded badlands at 0, 0, around Y 106.

2 Pale Garden at spawn: A pale garden about 600 blocks across right at spawn.
Seed4312612076231925310
What X, Z Distance Pale Garden -2, -2 3 blocks Trial Chamber 112, 96 148 blocks Ancient City -208, 176 272 blocks Ruined PortalUndergroundAir pocketMountain portal 32, -272 274 blocks VillagePlains village 128, -288 315 blocks Stronghold -1132, -956 1.5k blocks Spawn in a pale garden at 0, 0, around Y 123.

3 Village at spawn: A snowy village right at spawn.
Seed1138588672103223
What X, Z Distance VillageSnowy village 0, 0 0 blocks IglooWith basement 160, 0 160 blocks Ruined PortalAir pocket 64, 160 172 blocks Trial Chamber 0, -288 288 blocks Outpost 128, 336 360 blocks Stronghold -1388, 340 1.4k blocks Spawn in snowy plains at 0, 0, around Y 66.

4 Mushroom island at spawn: A mushroom island about 640 blocks across, 277 blocks south of spawn.
Seed8848941816345899447
What X, Z Distance Mushroom Fields 638, -182 277 blocks Ruined PortalOcean portal 352, -528 223 blocks Shipwreck 800, -480 242 blocks Monument 784, -336 250 blocks Trial Chamber 752, -240 283 blocks Outpost 704, -752 336 blocks Stronghold 1700, -1292 1.4k blocks Spawn in a forest at 560, -448, around Y 64.

5 Classic fast start: From spawn: a savanna village 32 blocks east and a giant ruined portal 64 blocks east.
Seed889262350464862
What X, Z Distance VillageSavanna village 32, 0 32 blocks Ruined PortalGiantUndergroundAir pocket 64, 0 64 blocks Trial Chamber 320, 224 391 blocks Stronghold 1380, -540 1.5k blocks Spawn in a savanna at 0, 0, around Y 72.

6 Mansion near spawn: A woodland mansion 51 blocks south of spawn.
Seed1907739375453033
What X, Z Distance Mansion 192, 176 51 blocks Trial Chamber 304, 160 132 blocks Ruined Portal 0, 336 272 blocks Stronghold 1460, 308 1.3k blocks Spawn in a dark forest at 176, 128, around Y 65.

7 Monument at spawn: An ocean monument 93 blocks south-east of spawn.
Seed1494491221320449
What X, Z Distance Monument 64, 48 93 blocks Ruined PortalOcean portal 32, 176 209 blocks Shipwreck 80, 176 218 blocks Trial Chamber -240, 32 264 blocks Stronghold -1292, -124 1.3k blocks Spawn in a forest at 16, -32, around Y 66.

8 Witch next door: From spawn: a taiga village right there and a witch hut 34 blocks north-east.
Seed123575951371545311
What X, Z Distance VillageTaiga village 0, 128 23 blocks Swamp Hut 32, 80 34 blocks Trial Chamber 0, 224 117 blocks IglooWith basement -240, 80 254 blocks Ruined PortalAir pocket 384, 112 372 blocks Stronghold -1180, 996 1.5k blocks Spawn in a swamp at 12, 108, around Y 63.