architecture gave way to Neoclassical architecture in the 1770s, when Tsarskoye Selo became the summer residence of Catherine the Great's court. Yuri Velten redesigned the south facade of the palace, while the side wings were converted from one-storey into four-storey Zubov and Chapel Annexes. The Main Staircase was replaced by state and private rooms such as the Chinese Room, decorated with Charles Cameron designs, and a new staircase built in the center where the Chinese Room had stood. Cameron's 1780s interior designs included the Arabesque Room with arabesque painted ceiling, walls, and doors, while Greek and Roman classical motifs were used on the wall vertical panels. Cameron's Lyons Room used French golden-yellow silk on the walls, while the doors, stoves and panels used Lake Baikal lapis lazuli. The empress' bedroom used Wedgwood jasper bas-reliefs designed by John Flaxman and George Stubbs. The Blue Room, or "Snuff-box", incorporated white and bright blue glass on the walls. Giacomo Quarenghi designed the Mirror and Silver Rooms in 1789, while Rastrelli's hanging gardens were pulled down in 1773. Vasily Neyolov's 1768 master plan for Tsarskoye Selo was elaborated in 1771 by Johann Busch and implemented. Antonio Rinaldi added the Chesme Column, Morea Column, and the Kagul Obelisk to commemorate the victorious Russo-Turkish War (1768-1774). Neyolov's Gothic monuments included the Admiralty, the Hermitage Kitchen and Red (Turkish) Cascade, and his Chinese motifs included the Creaking Pagoda and the Great Caprice. Neyolov's Early Classicism monuments included the Upper and Lower Baths. Neyolov built the Opera House in 1778–79. In the 1780s, Cameron added the Thermae as part of Catherine the Great's "Greek-Roman rhapsody", and started building the Chinese Village. Quarenghi added a music pavilion and Ceres temple to an Upper Pond island. His Kitchen Ruin folly was added next to the Concert Hall. Neyolov's Babolovo Palace was added by 1785, and in the 1790s, Quarenghi built the Alexander Palace. In 1809, Luigi Rusca built the Granite Terrace. In 1817, Stasov built the Triumphal Arch commemorating the Russian repulsion of the French invasion of Russia. From 1851 to 1852, Monighetti added the Turkish Bath. With Catherine the Great's death in 1796, park construction ceased. Vasily Stasov restored the damage caused by the 1820 fire, which included Rastrelli's chapel and adjoining apartments. In the 1850s, Andrei Stakenschneider decorated the state room ceilings with stucco ornament and Hermitage Museum canvases. In 1860, Ippolito Monighetti reconstructed the central staircase and