Shrink the Guggenheim, plop it inside a yellow-brick box with a round Romanesque entryway and put it where you'd least expect it: on a shady San Francisco alley that was once a backstreet brothel. Groundbreaking American architect Frank Lloyd Wright designed this as the VC Morris Gift Store in 1948, and it's his only San Francisco building. It's changed hands since, and at this writing, the building is for sale. If it's open, duck inside to see Wright's signature nautilus-shell atrium ramp.
