Lyon, France A traboule (tunnel or hallway) through a building in Vieux Lyon (the old city). Lyon's traboules date back to the 4th century. I was trapped for about 10 minutes in this traboule after the old heavy door slammed shut and locked, and the lights went out. Pounding on the door and yelling, I was finally rescued by a French woman who spoke no English.

Lyon, France Roman ruins behind the Lyon Cathedral.