Lithuanian Sea Museum and Dolphinarium

The Lithuanian Sea Museum occupies a striking 19th-century Kopgalis sea fortress at the northern tip of the Curonian Spit, where the lagoon meets the Baltic Sea. The circular fort — built during the Prussian era to defend the Klaipėda harbor entrance — provides a dramatic and unique setting for one of the Baltic region's finest marine museums. The museum's aquariums showcase Baltic and tropical marine life, while outdoor pools house rescued seals and sea lions undergoing rehabilitation. The dolphinarium — controversial but popular — presents the only dolphin shows in the Baltic states. The fortress architecture itself is fascinating, with its vaulted casemates and circular layout adding atmospheric character to the exhibits.