The Royal Palace of Caserta is a former royal residence in Caserta, Campania, 35km north of Naples in southern Italy, constructed by the House of Bourbon-Two Sicilies as their main residence as kings of Naples. Located 35 km north of the historic centre of Naples, Italy, the complex is the largest palace 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". The Royal Palace of Caserta is the largest former royal residence in the world, over 2 million m3 in volume and covering an area of 47,000 m2 and a floorspace of 138,000 square metres is distributed in the five stories of the building.