The
Alcázar of Seville (Spanish "Reales Alcázares de Sevilla" or "Royal Alcazars of Seville", ) is a royal palace in
Seville,
Spain, originally developed by
Moorish Muslim kings. The palace is renowned as one of the most beautiful in Spain, being regarded as one of the most outstanding examples of mudéjar architecture found on the Iberian Peninsula. 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. It is the oldest royal palace still in use in Europe, and was registered in 1987 by
UNESCO as a
World Heritage Site, along with the
Seville Cathedral and the
General Archive of the Indies.