The pulse of history is heard clearly over the island, which once was a warehouse for the sailing fleet's food supply. After 300 years as a closed military area, the island Stumholmen was transformed in 1993 into a civilian section of the city. Among waterside houses and work places and at the lovely swimming beach, history lives on. This is where you will find the Naval Museum, Karlskrona’s foremost visitor attraction. The museum is an architectural masterpiece, with its 140-metreplus structure extending right out over the water! The museum also incorporates the interesting Sloop and Longboat Shed with boat displays. The old hangars from the pioneering days of aviation and Kungshall storehouse are other interesting attractions. The unique submarine hall with HMS Neptun is the museums latest attraction, opened in june 2014.