Considering how vital sailing and shipbuilding were to the growth of the Dubrovnik Republic, this is one of the city’s most important museums. The display of models of the fine galleons that were once built here is the stuff of fairy tales – they, along with blueprints from the archives, were used for building the replicas that you might glimpse in the Gruž harbour today. Along with the Aquarium, the Museum is housed in the massive St John’s fortress on the old harbour.