A symbol of the Madrid of the Habsburgs, this elegant and secluded square is dotted with ancient and historic buildings. The beautiful 17th-century Casa de la Villa, designed by architect Juan Gómez de Mora, has barely changed, except for the balcony on Calle Mayor, built in the 18th century by Villanueva so the queen could watch the Corpus Christi procession. It still retains its four towers and two gates, from when it housed the town hall and the Villa Prison. Next door is the 16th-century Casa de Cisneros, built in 1537 by a nephew of Cardinal Cisneros in the Plateresque style. It is connected by a passageway to the Casa de la Villa and the Mudejar-style Torre de los Lujanes. This is one of the oldest 15th-century civil buildings in Madrid and was the prison of King Francis I of France when he was captured in the Battle of Pavia by Charles I in 1520. In the centre of the square, a work by Benlliure, is the statue of Álvaro de Bazán, Marquis of Santa Cruz, Admiral of the Spanish Imperial Navy with Philip II.