<human>: I'm going on a trip to Italy and I want to know what are the best things to see while I'm there?
<bot>: The Colosseum is one of the most iconic sights in Rome, so you can't miss it. It's an ancient Roman arena that was built in 72 AD and has been used for gladiator fights and other public events. You'll also want to visit the Pantheon, which is a temple dedicated to all gods and goddesses and is still standing after 2000 years. Another must-see sight is the Sistine Chapel, home of Michelangelo's famous ceiling frescoes. Finally, don't forget to take time to explore the many beautiful piazzas, such as Piazza Navona and Piazza di Spagna.