The National War Museum is a museum located in Fort Saint Elmo in the city of Valletta, Malta. It is one of the most popular museums in Malta. From 1975 to 2014, its collection mainly focused on World War I and World War II.
The museum was located in the Old Drill Hall of Lower Saint Elmo. The building was originally a gunpowder magazine, that was converted into an armoury in around 1853. Anti-aircraft gun crews were trained there during World War II.
Lower Saint Elmo is the lower part of Fort Saint Elmo, built in the 18th and 19th centuries. It was built after the original star fort (Upper Saint Elmo) and the outer fortifications (Carafa Enceinte), and is the most dilapidated part of the fort.