Maritiman

Near the opera house, the world’s largest floating ship museum is made up of 20 historical crafts, including fishing boats, a light vessel and a firefighter, all linked by walkways. Shinny down into the 69m-long submarine Nordkaparen for a throat-tightening glimpse into underwater warfare. Another highlight is the labyrinthine 121m-long destroyer Småland, which saw service from 1952 to 1979. Inside, hunched figures listen to crackling radio ­messages, and the bunks look just-slept-in – you half expect to meet uniformed sailors in the dim, twisting passages… Allow a couple of hours to explore.