Seville

The Alcázar facing the cathedral has developed from the city's old Moorish Palace; construction was begun in 1181 and continued for over 500 years, mainly in Mudejar style, but also in Renaissance. Its gardens are a blend of Moorish, Andalusian, and Christian traditions.
The Torre del Oro was built by the Almohad dynasty as watchower 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 Town Hall, built in the 16th century in Platersque Style by Diego de Riaño. The Façade to Plaza Nueva was built in the 19th century in Neoclassical style.
The University of Seville is housed in the original site of the first tobacco factory in Europe, La Antigua fábrica de Tabacos, a vast 18th century building in  Baroque style.