Build actual minecraft biomes, block by block, wherever you want.
8 Copper Ingots around a Crafting Table.
8 Iron Ingots around a Biome Anchor.
8 Gold Ingots around an Advanced Biome Anchor.
8 Copper Ingots around Stone Bricks.
8 Iron Ingots around a Structure Anchor.
8 Gold Ingots around an Advanced Structure Anchor.
(Inactive) Biome Anchors. Activate them to see them light up!
(Inactive) Structure Anchors. Activate them to see them light up!
An Advanced Biome Anchor, turning the artificial area into a Flower Forest.
That's quite the miniature fortress.