Alcatraz Island

Out in the middle of the San Francisco Bay, the island of Alcatraz is a world unto itself. (via)
Made famous by the maximum securtiy prison which was situated there in the past and the movie 'Escape from Alcatraz' whith Dirty Harry placed in the same setting.

A Google video tour of Alcatraz:
Building 64 (4 mins.)
Top to Bottom (3 mins.)
East Gun Gallery (2.5)
Hospital Ward (3.5 mins.)
The Tunnel (2 mins.)

The videos are accompanied by free restaurant music and a gay narrator.