 The period of highest flourishing in Musin-Pushkin's state, public and collecting activities fell on his residence in Saint-Petersburg in the house on the Moyka embankment.He became a member of the Russian Academy of Sciences (1789), he was the president of Imperial Academy of Arts (1794-1797), the head of the Holy Synod (1791-1797), actual Councillor of State (1784), actual Privy Councillor (1793), the managing director of foreign coreligionists school (1789).Catherine the Second patronized him.