Fodor's Expert Review Estonian Maritime Museum

The stocky guardian of the northernmost point of the Old Town, Paks Margareeta (Fat Margaret) is a 16th-century fortification, allegedly named for a particularly hefty cannon it contained. Now it houses the Maritime Museum and a roof with a view of the Old Town. Also part of the Maritime Museum is the historic Seaplane Harbour at Vesilennuki tee 6, as well as two historic ships.