Cliff Palace, Mesa Verde National Park, Colorado
In 1896 Adolph Sutro built what the current incarnation of the Cliff House is based on. The building survived the San Francisco earthquake in 1906, but was burned down by a fire in 1907.
The Giant Camera is a walk-in camera obscura, based on a 15th century design by Leonardo da Vinci.It produces 360 degrees of spectacular Live Images of the Seal Rock Area