The National Military History Museum is a museum dedicated to military history in Sofia, Bulgaria. A structure of the Ministry of Defence, it has existed under various names and subordinate to various institutions since 1 August 1914 (in practice since 4 July 1916). It disposes of 5,000 m² of indoor and 40,000 m² outdoor (of which 500 m² covered) exhibition area, a library and a computer centre.