Built in a part of Rome already inhabited during Antiquity, the Vatican City, with its fortified walls, basilica and palaces, bears witness to the history of Rome. Don't miss St Peter's Basilica, the sumptuous gardens, nor the museums and their magnificent collections collected by popes down the ages, the highpoint of which is the Sistine Chapel. Pilgrims and art lovers alike congregate in the latter, which is nearly always crowded.