New Treehouses of the World Hardcover. Since the publication of Treehouses of the World , the community of treehouse builders has grown tremendously, and many more innovative treehouses have been built around the world. In New Treehou.
Petra Island (located on Lake Mahopac in Putnam County, New York) is an private island complete with a stunning Frank Lloyd Wright-designed house, guest cottage and artist studio. There are views from every room, six fireplaces, a helipad