Sevilla:
Alcazar
Far earlier than the arrival of the Muslims, the site of the Alcazar was the site of local rulers of Sevilla. The Muslims constructed their fortified palace in the 8th century. Better walls were added at a later stage. In the 11th century it was turned into the court of the Abbadid dynasty. The cruel poet-ruler al-Mu'tadid extended its premises to allow room for his 800 women rich harem. The terraces were decorated with flowers using the sculls of his slain enemies as pots.
In the 12th and 13th centuries did the Almohads improve its strategic qualities by turning it into a citadel. It stretched all the way down to the river, including the Torre del Oro. Of the walls that survive until our times, most belong to the Christian era. The interior was largely rebuilt in the 14th century, and the Alcazar represents one of the finest examples of Mudéjar architecture, the architecture of Moors working under Christian rulers. So while what you see is built by the command of a Christian ruler, it still is part of the history of Moorish Spain.