Known as the gateway of Provence, Avignon is a popular base for exploring the wider region. The historic center, which includes the Palais des Papes, the cathedral and the Pont d'Avignon, became a UNESCOWorld Heritage Site in 1995 because of its architecture and importance during the 14th and 15th centuries. The medieval monuments and the annual Festival d'Avignon (commonly called: "Festival In d'Avignon") and its accompanying Festival Off d'Avignon - one of the world's largest festivals for performing arts have helped to make the town a major center for tourism. It’s a city that will seduce you and have you yearning to return.