Covering over 2000 m², The Artillery and Armoured Vehicles Open Air Exhibition displays more than 180 items, many of them being rare or unique in Europe or the world. Among the items, either in regular use or spoils of war, one can notice various Krupp-type cannons, used in the Independence War (1877-1878) or many types of canons or vehicles used in the Great War, the Second World War or the Communist period. The most important pieces of the collection are the two Škoda railway heavy howitzers, captured by the Romanian army in 1919.