HMS Belfast is a magnet for kids of all ages. This large, light cruiser – launched in 1938 – served in WWII, helping to sink the German battleship Scharnhorst, shelling the Normandy coast on D-Day and later participating in the Korean War. Its 6in guns could bombard a target 14 land miles distant. Displays offer a great insight into what life on board was like, in peacetimes and during military engagements.
Excellent audio guides (included in your admission fee) feature anecdotes from former crew members. There's a cafe on-board, and a bar in the visitor centre for landlubbers.