TreeHouses

World's largest burned down : https://www.architecturaldigest.com/story/worlds-largest-treehouse-burned-ground-less-15-minutes

World's highest : https://www.thenationalnews.com/lifestyle/travel/above-the-canopy-in-laos-a-stay-in-the-world-s-highest-tree-house-that-is-only-accessible-by-zip-line-1.953192

See also :

• TreeChurch
• SelfBuiltCathedral