Italy is home to more UNESCO World Heritage Sites than almost any other country, and its capital is one big open-air museum. Rome combines ancient monuments such as the Colosseum, the Roman Forum and the Pantheon with Baroque fountains, lively piazzas and the Vatican with St Peter’s Basilica and the Sistine Chapel. Start planning your trip with our guide to the best things to do in Rome, with practical tips on tickets, skip-the-line options and how many days you need.