Rome's Colosseum, also called the Amphitheatrum Flavium, was built between 70 and 82 AD by the Flavian emperors, Vespasian and Titus. The Colosseum held up to 55,000 spectators and was the scene of many deadly gladiatorial and wild animal fights.
When visiting the Roman Colosseum, you can avoid the long ticket lines by buying a ticket at the nearby Palatine Hill entrance. You can also get your picture taken with a gladiator outside the Colosseum.
Picture of Rome's Colosseum © 2006 by Martha Bakerjian, licensed to about.com