Forum Marinum
Close to the castle, toward the seaward end of the Aura River, and signaled by the magnificent Suomen Joutsen (Swan of Finland) three-mast, full-rigger sailing ship berthed nearby, Forum Marinum contains a nautical museum and the museum of the Finnish navy and stages exhibitions and conferences connected to seafaring. In summer, you can also visit the Suomen Joutsen, the Bore ferry (also used as a hostel), and two naval vessels, namely a corvette and a minelayer.