mutual jealousy of the Saxons and the Poles, and a struggle broke out in Poland which was only ended when the king promised to limit the number of his army in that country to 18,000 men. Peter the Great seized on the opportunity to pose as mediator, threatened the Commonwealth militarily, and in 1717 forced Augustus and the nobility to sign an accommodation favorable to Russian interests, at the Silent Sejm (Sejm Niemy). For the remainder of his reign, in an uneasy relationship, Augustus was more or less dependent on Russia (and to a lesser extent, on Austria) to maintain his Polish throne. He gave up his dynastic ambitions and concentrated instead on attempts to strengthen the Commonwealth. Faced with both internal and foreign opposition, however, he achieved little. In 1729 he established the Grand Musketeers Company in Dresden, one of the oldest Polish officers' schools, which in 1730 was relocated to Warsaw. Augustus died at Warsaw in 1733. Although he had failed to make the Polish throne hereditary in his house, his eldest son, Frederick Augustus II of Saxony, did succeed him to the Polish throne as Augustus III of Poland—although he had to be installed by the Russian army in the War of the Polish Succession. Legacy Augustus II and the arts Augustus is perhaps best remembered as a patron of the arts and architecture. He had beautiful palaces built in Dresden, a city that became renowned for extraordinary cultural brilliance. He introduced the first public museums, such as the Green Vault in 1723, and started systematic collection of paintings that are now on display in the Old Masters Gallery. From 1687 to 1689, Augustus toured France and Italy. The extravagant court in Versailles—perfectly tailored to fit the needs of an absolute monarch—impressed him deeply. In accordance with the spirit of the baroque age, Augustus invested heavily in the representative splendor of Dresden Castle, his major residence, to advertise his wealth and power. With strict building regulations, major urban development plans, and a certain feeling for art, the king began to transform Dresden into a renowned cultural center with one of Germany's finest art collections, though most of the city's famous sights and landmarks were completed during the reign of his son Augustus III. The most famous building started under Augustus the Strong was the Zwinger. Also known are Pillnitz Castle, his summer residence, Moritzburg Castle and Hubertusburg