The Coliseum – the greatest amphitheater of the antiquity – was built in Rome, Italy, about 1920 years ago. It is considered an architectural and engineering wonder, and remains as a standing proof of both the grandeur and the cruelty of the Roman world.
The Coliseum was designed to hold 50,000 spectators, and it had approximately eighty entrances so crowds could arrive and leave easily and quickly.
What we see nowadays is just the skeleton of what was the greatest arena in the ancient world. Three-fifths of the outer surrounding brick wall is missing.