LEED-certified treetop home

This home in Mill Valley, California was built on a small hillside lot which made for a challenging vertical floor plan. To compensate for lack of yard space, the home has as many outdoor rooms as it does indoor. On top of being breathtakingly beautiful, the 2,100-square-foot house was named the first LEED for Homes Platinum home in Marin County in 2010.

More: Take a room-by-room tour