The Subaquatic Archaeology National Museum is located on the Alfonso XII dock and is part of the transformation of Cartagena's port into an area of cultural facilities. The museum is divided into two buildings, separated by a public square that tries to make the building permeable to the town. The building parallel to the avenue is a two-highs prismatic volume, which houses the private programme like offices, workshops and the deposit. The other building, the one closest to the sea, is a zigzag glazed volume, corresponding to the skylight of the exhibition halls. A ramp leads people down from the public square to the main entrance and the subterranean hall that links the two volumes. The museum is built with three main materials: red concrete for walls, glass for the big lighting openings and metal for roofs and sunscreens.