Italy is known for the Colosseum, an iconic symbol of ancient Roman architecture and engineering. Located in the heart of Rome, the Colosseum was completed in AD 80 and served as a grand amphitheater for public spectacles, including gladiatorial contests, mock battles, and other entertainment. Its elliptical structure could hold tens of thousands of spectators and is an impressive feat of design, featuring complex systems for crowd control and staging. Today, the Colosseum is a UNESCO World Heritage Site and one of the most visited monuments in the world, drawing millions of tourists who come to appreciate its historical significance and grandeur.