The Drassanes del Grau are Valencia's old shipyard buildings in the port district, a rare medieval survival away from the historic centre. Their Gothic arches and long halls point back to the period when Valencia's wealth depended heavily on Mediterranean trade.
They are especially interesting if you are exploring the maritime side of the city around the beach and harbour. The buildings connect that modern waterfront to a much older commercial Valencia, one built around ships, merchants, and the sea.