The Alcázar of Seville (Spanish "Reales Alcázares de Sevilla" or "Royal Alcazars of Seville") is a royal palace in Seville, Spain, originally a Moorish fort. The Almohades were the first to build a palace, which was called Al-Muwarak, on the site of the modern day Alcázar. The palace is one of the best remaining examples of mudéjar architecture. Subsequent monarchs have added their own additions to the Alcázar. The upper levels of the Alcázar are still used by the royal family as the official Seville residence and are administered by the Patrimonio Nacional.