You enter Jerez' Alcázar via the Patio de Armas. On the left is the beautiful mezquita (mosque), converted to a chapel by Alfonso X in 1264. On the right, the 18th-century Palacio Villavicencio, built over the ruins of the old Almohad palace, contains works of art, but is best known for its bird’s-eye view of Jerez from the summit. The camera obscura inside the palace's tower provides a picturesque live panorama of Jerez; you can only access the summit with a camera obscura ticket.