The Barcelona Royal Shipyard is a shipyard and former military building of Gothic architecture placed at the Port Vell area of the Port of Barcelona. Nowadays it houses the Barcelona Maritime Museum. Construction started during the 13th century under the rule of Peter III of Aragon. During excavations in 2012 it was discovered that in the late 16th century a new building was constructed on top of the old medieval dockyard, giving the building its current structure.