Rome has been a major Christian pilgrimage site since the Middle Ages. People from all over the Christian world visit Vatican City, within the city of Rome, the seat of the papacy. The city became a major pilgrimage site during the Middle Ages. Apart from brief periods as an independent city during the Middle Ages, Rome kept its status as Papal capital and holy city for centuries, even when the Papacy briefly relocated to Avignon (1309–1377). Catholics believe that the Vatican is the last resting place of St. Peter.