The museum is in Gunpowder Tower, which was an important component in the Medieval fortifications system of Rīga. The basic subject of the museum is Latvia’s military and political history, and exhibits are related to these subjects.

Today there’s a single-family farm and not much else, but at one time Olmaņi was the site of two important coastal batteries collectively known as “Krastnoflotskaya.” Until 1955, the one to the South of Olmaņi, there were four 152-mm Kane type cannons, which were manufactured during World War I and were widely used to protect the coastal territory of the Baltic Soviet republics of Latvia and Estonia during the rule of the Soviet regime. Small concentric ramparts of earth are all that’s left there today. After 1955, to the North of Olmaņi, another battery was installed with four MY-2 152-mm cannons. They had a range of 25 km. The battery remained in battle readiness until 1975, when it was turned into a reserve facility. It’s not easy to find, but it’s worth the search. The platforms for the cannons and the subterranean bunkers are still there. This was indeed one of the most impressive coastal batteries along the shores of the Baltic Sea.

This coast guard facility was housed in a building that used to be a maritime school. In the post-Soviet era, accommodations were offered at the building. The coast guard tower is one of the best-preserved objects of its kind along the Latvian shoreline.