Ducal Palace, Mantua

The Palazzo Ducale di Mantova is a group of buildings in Mantua, Lombardy, northern Italy, built between the 14th and the 17th century mainly by the noble family of Gonzaga as their royal residence in the capital of their Duchy. The buildings are connected by corridors and galleries and are enriched by inner courts and wide gardens. The complex includes some 500 rooms and occupies an area of c. 34,000 m2,

which make it the sixth largest palace in Europe after the palaces of the Vatican, the Louvre Palace, the Palace of Versailles, the Royal Palace of Caserta and the Castle of Fontainebleau. It has more than 500 rooms and contains seven gardens and eight courtyards. Although most famous for Mantegna's frescos in the Camera degli Sposi, they have many other very significant architectural and painted elements.

Source: Wikipedia