Amphitheatre
The Colosseum is one of the largest open-air arenas ever built and it can hold up to 50,000 people. Over the years, it has been damaged by fire, earthquakes, and weather conditions, but it has still managed to remain standing.
Interesting fact: Two-thirds of the Colosseum has been destroyed by natural disasters since its construction in 80 AD.
Location: Piazza del Colosseo, 1, 00184 Roma RM, Italy. Find on map