The Colosseum, also known as the Flavian Amphitheater, is one of Rome's most iconic landmarks. Located right in the heart of the city, it was constructed in the late 1st century AD as a gift from Emperor Vespasian to the Roman people.

Work on the Colosseum started around 70-72 CE under Vespasian. It took almost a decade to complete and saw several modifications over the following years. The structure was massive - about 620 by 513 feet with four stories towering overhead. There were 80 entrances, most for spectators but a few reserved for participants and the emperor. This was clearly necessary since over 50,000 fans could pack inside at max capacity!

The Colosseum stood strong for centuries but suffered damage from earthquakes in the 5th century. It fell into disrepair over time. By the 20th century, almost two-thirds of the original building was destroyed. Thankfully, restoration efforts began in the 1990s. Today, after repairs, it remains one of Rome's top attractions - welcoming millions of visitors each year who come to admire its impressive architecture and history.

To get there, take the Metro line B and exit at the "Colosseo" stop. Where to buy tickets Tickets can be purchased in advance online or at ticket booths at the site. Let me know if you need any other info for planning your visit!