Architect and environmentalist Peter Bahouth designed and built this beautiful trio of tree houses linked by bridges in an Atlanta forest, which also happens to be his backyard. Inspired by the tree houses and adventures of his youth, the idea was to create a sort of fort for grown-ups. The three houses dubbed “Mind,” “Body,” and “Spirit,” include a living room and bedroom with a special bed that slides out for an improved view of the forest below. The photos here were taken for Jane Field-Lewis’ book My Cool Shed, provided courtesy photographer Lindsay Appel.