The Temple of the Ship-Carpenters was built on top of a fullery (workshops where clothes were cleaned). Ostia and Portus each had its own guild of ship-carpenters. The guilds had hundreds of members, which suggests that ships were not only repaired in the harbours, but also built. The temple dates from the end of the 2nd century A.D. In the 4th century A.D., when commercial life shifted to Portus, the association declined and the temple became a depository for marble.