Woodland Mansion in the Far West of a Taiga and Dark Forest Coast — Java 26.3

A taiga start with an Ancient City and shipwreck close by, and a Woodland Mansion roughly 1,000 blocks west.

Top-down 2D biome map centred on a taiga spawn marker, with markers for a shipwreck, ruined portal, Ancient City, pillager outpost, ocean monument and a distant Woodland Mansion to the west.
Java 26.3 Edition Java Spawn -40, 184 Biome Taiga Structures 6
Ancient CityWoodland MansionBirch ForestDark ForestForestOceanOld Growth Birch ForestOld Growth Pine TaigaPlainsTaigaOcean MonumentPillager Outpost
Open in the seed map →
Seed 5604936183403649955

Copy it into Minecraft 26.3 (Java).

The Woodland Mansion sits about 986 blocks west of spawn, a long but straightforward walk from a taiga start. Closer to home, a shipwreck lies about 147 blocks north, and an Ancient City is about 341 blocks south-east, with a ruined portal at about 300 blocks in the same direction. Dark forest, river and birch patches begin roughly 64 blocks out, and cold ocean is near, so wood and travel routes are easy.

Structures near spawn
Shipwreck ↑ N -96, 48 147
Ruined Portal ↘ SE 208, 352 300
Ancient City ↘ SE 224, 400 341
Pillager Outpost ↘ SE 224, 528 434
Ocean Monument → E 688, 192 728
Woodland Mansion ← W -1024, 128 986
Biome mix near spawn
Ocean 17%
Dark Forest 12%
Cold Ocean 11%
Forest 10%
River 9%
Deep Ocean 6%
Birch Forest 6%