The Colosseum. The Vatican. The Sistine Chapel. St Peter's Basilica. The food. Between Hollywood and the history books, you've probably already seen and heard a lot about Rome. But with so much to see and do, where do you start? From the ancient city and Italian gelato and the best views in the city, there is a lot you can cover in one short visit. Here's what to see and do on your trip to Rome, Italy.