Space age round house in Wilton, Connecticut, designed by architect Richard T. Foster in 1968. “Floating 12 feet off the ground and 72 feet in diameter, the Round House is walled in glass, covered over and under with cedar shingles, and set on a cylindrical base retained by walls of stone.” The house rotates on its base.
A closer look at the house:
If you can stand the cloying mood music, here’s a video tour of the house, showing off its open floor plan, “spacious, spa-like bath,” stainless steel appliances, custom Ash cabinetry, and pristine surroundings.
As of June 2010, the house was on the market for $1.75 million. In 2008, before the market fell, it was selling for $2.3 million.
round houses 
Update: the house sold in October 2010 for $1,450,000. Congratulations to the new owners!
It is a magnificent design overlooking the river. It has a feeling of fleeing in the air.Such designs have long duration life.
It is the House of the Future. If you go to http://www.lighthouse.net.nz you will see a house revolving, sitting on a 2 mtr base 3 mtr in the air. It does a 360 continous as required — no restriction to turning at all. All services turn with the house.