the Coliseum, is an elliptical amphitheatre in the centre of the city of Rome, Italy. Built of concrete and stone, it was the largest amphitheatre ever built in the Roman Empire, and is considered one of the greatest works of Roman architecture and engineering.
The Colosseum could hold between 50,000 and 80,000 spectators at a time, and was used for gladiatorial contests, public spectacles, and executions. It was also used for theatrical productions, mock sea battles, and other forms of entertainment. The Colosseum is 189 metres long, 156 metres wide, and 57 metres high, and has a ground area of 24,000 square metres.
The Colosseum is divided into four tiers, each with a different purpose. The first tier, known as the podium, was reserved for the emperor, his family, and other dignitaries. The second tier, known as the maenianum primum, was reserved for the senatorial class. The third tier, known as the maenianum secundum, was reserved for the wealthy citizens of Rome. The fourth tier, known as the summa cavea, was reserved for the general public.
The Colosseum was used for public entertainment for over 500 years. However, it fell into disuse in the 6th century AD, and was abandoned for over 1,000 years. It was rediscovered in the 18th century, and has since been restored and is now one of the most popular tourist destinations in the world.