This treehotel located near the Swedish village of Harads is built in the shape of the UFO. It’s pretty odd, and you have to pay $650 per night to stay here.
Crossville, Tennessee, hosts what is maybe the largest treehouse in the world! The house rises 97 feet into the sky! The support for the treehouse is provided by a live 80-foot-tall white oak 12 feet in diameter at its base. Six other trees help to support the house too. The treehouse has 10 floors, averaging nine to eleven ft. in height.