Which famous Roman sporting site did emperor Vespasian began construction for?

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.

It's formal name was the Flavian Amphitheater, but we know it by its nickname, the Colosseum.