Endumatum

Endumatum is a large, hollow tree, covered in bluish fairy souls. Most of the civilization is on the outside of the tree, but it still has many structures inside, including a pub, a shopping mall, and a clothing store. Many birdcage-shaped houses hang from tree limbs, making it look more like a fairy civilization than a human one. It was inspired by fairy architecture, but not built by fairies at all.

Trivia

 * Simon of the Book is in the Endumatum graveyard.