Although it is predominantly Gothic, the cathedral also displays other artistic styles, given that it was built over a period lasting from 1221 to 1795. Its main façade is the Puerta del Perdón, with a starred rose-window and a gallery of statues of the Castile monarchs. On either side are its 84-metre towers, crowned by magnificent 15th century spires with open stonework traceries. Its most beautiful group of sculptures, however, is to be found on the Puerta del Sarmental façade, with the image of a Pantocrator surrounded by the apostles and evangelists. Inside, special mention should be made of the dome of the main nave, topped with a beautiful Mudejar vault. Beneath it lie the remains of Rodrigo Díaz de Vivar, known as “El Cid Campeador”, and his wife, Doña Jimena.