Roman Colosseum, Rome, Italy

The Colosseum or Coliseum, also known as the Flavian Amphitheatre. It is an oval amphitheater in the center of the city of Rome, Italy. Built of concrete and sand, it is the largest amphitheatre ever built. The Colosseum is situated just east of the Roman Forum. Construction began under emperor Vespasian in 72AD and was completed in AD 80 under his successor and heir Titus.