The Military Museum is ideally located on the riverfront in the Alfama district, close to the Santa Apolónia railyway and metro stations, and housed within a 16th-century cannon foundry and former munitions depot. This fine old building is just as much an attraction as the exhibits with walls and ceilings lined with gold leaf, coloured marble and richly detailed paintings. The Military Museum is Lisbon's oldest muesum, first opening its doors to the public in 1876. On display are thousands of items representing the many wars and battles Portugal has been embroiled in during its long history. The Military museum has an artillery collection that is said to be the world's largest and an incredible display of guns, pistols and swords, including a 14th-century cannon and Vasco da Gama's sword.