Tree houses are built usually by people for leisure purposes, also for protection from wild animals. In some parts of the tropics, houses are either fastened to trees or elevated on stilts to keep the living quarters above the ground to protect occupants and stored food from scavenging animals. The Korowai, a Papuan tribe in the southeast of Irian Jaya, live in tree houses, some nearly 40 meters (130 ft) high, as protection against a tribe of neighboring head-hunters, the Citak.
Along with subterranean and ground level houses, tree houses are an option for building eco-friendly houses in remote forest areas, because they do not require a clearing of a certain area of forest. The wildlife, climate and illumination on ground level in areas of dense close-canopy forest is not desirable to some people.
Tom Chudleigh, Free Spirit Spheres, Qualicum Bay, British Columbia (Canada)
Terunobu Fujimori, Teahouse Tetsu, Kiyoharu Shirakaba Museum, Nakamaru, Hokuto City, Yamanashi (Japan)
Baumraum, Andreas Wenning, Between Alder and Oak, Osnabrück (Germany)
Michael Ince, Bialsky Tree House, Bridgehampton, New York (USA)
Casa na Árvore, Lake House, Araras, São Paulo (Brazil)
House Restaurant, Warkworth (New Zealand)
Hapuku Lodge, Hapuku Lodge Tree Houses, Kaikoura (New Zealand)
Roderick Wolgamott Romero, Lake-Nest Tree House, New York (USA)
Lukasz Kos, 4tree house, Walker’s Point, Lake Muskoka Ontario (Canada)
Nicko Bjorn Elliot, Nicko Bjorn Elliot Tree House, Toronto (Canada)
Artist Unknown
Artist: Vartan Garnikyan
Artist: 
Artist: 
Artist: 
Artist: 
Artist: 
Artist: 
Artist: 
Artist: A