Image by Roman Vukolov Shutterstock
Surrounded on two sides by island-dotted waters, Estonia has a rich maritime history, explored in this fascinating museum filled with interactive displays. When the building, with its triple-domed hangar, was completed in 1917, its reinforced-concrete shell frame construction was unique in the world. Resembling a classic Bond-villain lair, the vast space was completely restored and opened to the public in 2012. Highlights include exploring the cramped corridors of a 1930s naval submarine, and the ice-breaker and minehunter ships moored outside.