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In page Carlo Bartolomeo Rastrelli:

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Rastrelli's duties included the design of palaces, gardens, fountains, theatrical decorations, stamps for minting coins and medals, as well as monuments, using various materials such as rocks, metals and wax. Rastrelli also had to teach arts to Russian students. He arrived in Saint Petersburg in March 1716 on a three-year contract, but stayed in Russia until his death in 1744.[1]