Exterior and Treehouse Building Type Ethan Schussler built his first tree house at 12 years old. His today, in Sandpoint, Idaho, sits 30 feet above the ground and is accessed, if not by the rope ladder, an “elevator” consisting of a bicycle that, when pedaled, ascends a pulley system to the top.  Photo 2 of 25 in Photo Essay: Enchanting Tree Houses from Tour 8 Awesome Tiny Cabins Around the World