Close to Barcelona and half-way between the sea and the mountains, Girona enjoys a privileged position and preserves some of the most valuable heritage sites in Catalonia, based on three elements that are unique in Europe: its old fortifications, which include the western world's largest sections of wall dating from the time of Charlemagne, one of the best preserved Jewish quarters, and the Cathedral, which is the widest Gothic span in the world, with 23 metres of free space. In addition, the visitor has the opportunity of viewing beautiful Gothic and Romanesque buildings, and of contemplating works of art of notable interest in its fascinating museums.