What is the most famous ancient site in Europe?

Colosseum, Italy. ...

The Colosseum or Coliseum, also known as the Flavian Amphitheater, is an oval amphitheater in the center of the city of Rome, Italy. Built of travertine limestone, tough, and brick-faced concrete, it was the largest amphitheater ever built at the time and held 50,000 to 80,000 spectators.

answeramicable; (friendly);