The Alexandrov Cannon plant was built in 1773-1774 in the Petrovskaya Sloboda, whose emergence and activities had a major impact on the further development of the city. Both military and civilian products of the factory are presented here. Among the most interesting exhibits there is a working model of a cannon-drilling workshop, models of various cannons, cannon balls and shells, an openwork vase, a Gothic-style case for holding a watch, a bust of Empress Alexandra Feodorovna, a painted cast-iron casting "The Mystical Supper".