The Royal Palace of Caserta (Italian: Reggia di Caserta, ) is a former royal residence in Caserta, southern Italy, constructed for the Bourbon kings of Naples. It was the largest palace and one of the largest buildings erected in Europe during the 18th century. In 1997, the palace was designated a UNESCO World Heritage Site; its nomination described it as "the swan song of the spectacular art of the Baroque, from which it adopted all the features needed to create the illusions of multidirectional space". In terms of volume, the Royal Palace of Caserta is the largest royal residence in the world with over 2 million m³ and covering an area of about 235,000 m².