The city's cathedral was built from 1401–1519 after the Reconquista on the former site of the city's mosque. It is the largest of all medieval and Gothic cathedrals, in terms of both area and volume. The interior, with the longest nave in Spain, is lavishly decorated, with a large quantity of gold evident. The Cathedral reused some columns and elements from the mosque, and most famously the Giralda, originally a minaret, was converted into a bell tower. It is topped with a statue representing Faith. The Giralda is the city's most famous symbol.
The Alcázar facing the cathedral is the city's old Moorish Palace; construction was begun in 1181. Additional construction continued for over 500 years.
The Torre del Oro was built by the Almohad dynasty as watchtower and defensive barrier on the river. A chain was strung through the water from the base of the tower to prevent boats from traveling into the river port.
The Parque Maria Luisa was built for the 1929 Exposición Ibero-Americana World's Fair, and remains landscaped with attractive monuments and museums.
