They invented it. The greeks built only theatres, which were semicircular. The Romans built both theatres and amphitheatres (circular or oval arenas).
The Colosseum is an amphitheatre which the Romans built in the city of Rome. It was the largest amphitheatre in the Roman empire. It could seat 50,000 spectators. Amphitheatres were arenas for the gladiatorial games.
An amphitheatre is a type of open air venue that is used in the entertainment business when dealing with performances and shows. A long time ago, amphitheatres existed and were built by the ancient Romans.
There is only one Colosseum. Colosseum is a nickname for what the Romans called the Flavian amphitheatre in the city of rome. The Colosseum was an arena. Roman arenas were/are called amphitheatres. The arena of Constantinople was called the amphitheatre of Constantinople.
They went to the amphitheatre, which was the arena for the gladiatorial games, and the circus, the chariot racing track.
Gibson Amphitheatre was created in 1972.
International Amphitheatre was created in 1934.
International Amphitheatre ended in 1999.
Pacific Amphitheatre was created in 1983.
Shoreline Amphitheatre was created in 1986.
Bowery Amphitheatre was created in 1833.
Bowery Amphitheatre ended in 1866.
Starwood Amphitheatre ended in 2007.