The new California Academy of Sciences building in Golden Gate Park in San Francisco is one of the most unique buildings in the world.  The Academy, which houses an aquarium, planetarium, natural history museum and research institution, is housed in a building with a living roof that features 1.7 million plants and 7 hills. 

The latest Sunset magazine has a spread with some gorgeous photos.

"The Academy's new home is expected to be the world's largest public LEED (Leadership in Energy and Environmental Design) Platinum building. An innovative solar canopy will generate up to 10 percent of its energy; portholes let natural sunlight into the exhibits and also open and close for ventilation."