Photo of the Day 24 April 2008

Cars Passing the Colosseum, Rome, Italy, 1981
Photograph by O. Louis Mazzatenta
Nearly 2,000 years ago, the Colosseum was built to host gladiator duels, battle reenactments, and other public spectacles. Now, the 50,000-seat stone-and-concrete amphitheater serves Rome in another capacity: as a traffic circle.