The World's 7 Wonders Need to Be on Your Bucket List

This massive amphitheater in Rome was once a hub of violent entertainment, including gladiator fights and public executions. It was built in the first century under rule of Roman emperors in the Flavian dynasty to boost morale after the civil war. The iconic arena was created with stone and concrete and was large enough to fit over 50,000 spectators. The Colosseum was active for four centuries before becoming completely abandoned.