Discover a national treasure of Spain on a skip-the-line tour of Seville Cathedral. Meet your guide at the Monument to the Immaculate Conception and enter the world's largest Gothic church. Legend has it that construction of the cathedral began in the early 15th century. It was built over the site of the Aljama Mosque, which was destroyed when the city was re-conquered by the Christians. Admire the huge interior with its central nave and 4 side aisles. See lavish decorations that contrast with an overall sense of simplicity and restraint. Home to the richest altarpiece in the world, other highlights in the cathedral include the many chapels dedicated to saints and other important figures in the building's history. See the keys presented to Fernando by the Jewish and Moorish communities during the surrender of the city. Admire priceless stained-glass windows. Then go to the entrance to the Moorish minaret of La Giralda, which now functions as the cathedral’s bell tower. It is well worth a climb to the top!