The remains of this Prussian fort (which was used as a war laboratory to produce gunpowder and shells during World War II) proved to be the perfect location for the Museum of Armaments, which features displays of various (mostly Nazi and Soviet) weaponry and ammunition, a dynamic diorama showing anti-tank gun positions, and photos of battles from Poznań's history. Most interesting for military buffs, however, is the outdoor exhibition laden with a whole host of war machinery including a T-34 tank, a ‘Katyusha’ rocket launcher, bombers, and a MIG-15.