The Alcázar de Jerez, one of the most important monuments of the city, is located in the southeast corner of the walled enclosure, forming the walls, towers and gates a complex defensive system.
The term quarterdeck, from the Arabic, al-Qasr and define a set of buildings, surrounded by walls, which were the seat of political and military power. Fortress-palace with autonomous operation, a small town, seat of power that ruled the city and its territory.
The Alcázar was built in the twelfth century and is one of the few examples of Almohad architecture that exist in the Peninsula. Jerez becomes the century in one of the most important cities in the Lower Andalusia, as evidenced by the monumentality of its quarterdeck and extension of the wall, with a perimeter of 4 km enclosing a city of 46 hectares and reached have a population of 16,000.
The original Islamic fortress, are preserved: the two doors; the mosque, the Arab baths; the octagonal tower and courtyard pavilion Doña Blanca, located at the foot of the tower.
In later stages, highlighting the Tower of Homage of the late fifteenth century and the eighteenth century, the baroque palace of Villavicencio and oil mill.