The Russian monarch Peter the Great created the room with models of ships to teach his men engineering. Now this heritage is kept in a museum.
From one side this museum is typical for Russia, but on the other side the exhibits here are worth seeing. You can rummage there as in an old garage with trash, but find some very interesting things. For example, old models of ships.
Or not old at all.
The ship artillery.
A powder keg hangs on a pole. The purpose is to drive it into the bottom of the enemy’s ship and give them a sound thrashing.
A model of an old submarine.
A submarine with two mines and three navigators.