Tree sitting is a form of environmentalist civil disobedience in which a protester sits in a tree, usually on a small platform built for the purpose, to protect it from being cut down. Supporters usually provide the tree sitters with food and other supplies.
Demonstrators in a tree at the Berkeley oak grove protest in 2008
The tree-sitters' camp in Berkeley, California, protesting the planned removal of coastal live oaks. The protesters were in the trees from December 2, 2006, to September 9, 2008, making it the longest-running urban tree-sit in history.
A view of the Fall Creek village showing aerial walkway
A tree house, tree fort or treeshed, is a platform or building constructed around, next to or among the trunk or branches of one or more mature trees while above ground level. Tree houses can be used for recreation, work space, habitation, a hangout space and observation. People occasionally connect ladders or staircases to get up to the platforms.
A tree house in the park of the Château de Langeais in the Loire Valley, France
Papuan tree house in British New Guinea, 1885
A stairway and roundwalk
Strutted treehouse utilizing tree attachment bolts in a public park in Burlington, Vermont
