Belvedere Palace is a complex of two Baroque palaces in the center of Vienna, built between 1712 and 1723 as the summer residence of Prince Eugene of Savoy, the most successful general of the Habsburg Empire. Today, the complex houses the Österreichische Galerie Belvedere—Austria's national gallery—famous for holding Gustav Klimt's The Kiss (1907–1908), along with the world's largest collection of Klimt's work. The Upper Belvedere displays the permanent collection; the Lower Belvedere hosts rotating temporary exhibitions; and the annex, Belvedere 21, presents art from 1945 to the present day and contemporary art. The complex is part of Vienna's Historic Centre, inscribed on the UNESCO World Heritage List in 2001.