The Museum of Armaments is located on the premises of the former Fort Winiary (the Poznań Citadel), which was built by the Prussians from 1828 to 1842. Today’s form of the Citadel dates back to the 1870’s. At that time, the Citadel became a key part of the fortifications ring that surrounded the city. The Museum is housed in a Military Laboratory bunker added on in 1872. The bunker, which has survived as it was originally built, houses a display of militaries, documents, photographs, maps and items recovered from the Poznań fortifications. The biggest attraction of its permanent exhibition are its outdoor displays of military equipment featuring over a dozen military vehicles, nine air planes, two helicopters, five tanks, as well as numerous canons and mortars. The oldest items date back to the early 19th century.