Upper Belvedere - Vienna - Austria 3D model

The building was completed in 1723. The Sala Terrena, however, was at risk of collapsing due to structural problems, and in the winter of 1732–33 Hildebrandt was forced to install a vaulted ceiling supported by four Atlas pillars, giving the room its current appearance. Salomon Kleiner, an engineer from the Mainz elector's court, produced a ten-part publication between 1731 and 1740 containing a total of ninety plates, entitled Wunder würdiges Kriegs- und Siegs-Lager deß Unvergleichlichen Heldens Unserer Zeiten Eugenii Francisci Hertzogen zu Savoyen und Piemont (Wondrous war and victory encampment of the supreme hero of our age Eugene Francis Duke of Savoy and Piedmont), which documented in precise detail the state of the Belvedere complex.