Its historic centre, comprising the the Papal Palace, the Episcopal ensemble and the Avignon Bridge, is an outstanding example of medieval architecture. The massive Papal Palace, “the most well-fortified house in the world” as described by the writer Froissart, forms with the city and the Rocher des Doms a homogeneous ensemble and outstanding landscape. The Cathedral of Notre-Dame des Doms, lying to the north of the Papal Palace, dates from 1150. Criterion (i): The ensemble of the monuments of the Historic Centre of Avignon offers an outstanding example of ecclesiastical, administrative and military medieval architecture. The Papal Palace, the Episcopal ensemble and the St Bénézet Bridge are listed as Historic Monuments.