Every time I go to the Guggenheim Museum, I marvel at Frank Lloyd Wright's last completed design. It took 16 years to build a "new design" Museum from 1943 to 1959. Wright, 91, visited the pavilion in January of the same year and died a few months later. This is a building without right angles (even the elevator is semi-circular), spiraling upward on a 3-degree slope. The Guggenheim Museum was nominated as a World Heritage Site by the United States as one of his ten designs. (