The Mushroom House, in Cincinnati (Ohio, USA).
The Mushroom House (aka Tree House) is in the Hyde Park section of Cincinnati, OH. It was designed by architect Terry Brown, a professor of Architecture and Interior Design at the University of Cincinnati.
Wooden Gagster House – Arkhangelsk, Russia
Arkhangelsk, sometimes Archangel, is a city and the administrative center of Arkhangelsk Oblast, Russia. It lies on both banks of the Northern Dvina River near its exit into the White Sea, in the north of European Russia. The city spreads for over 40 kilometers (25 mi) along the banks of the river and numerous islands of its delta.Arkhangelsk was the chief seaport of medieval Russia, until 1703. It is served by the Talagi Airport and a smaller Vaskovo Airport.