added by archaeologs The best-preserved fort along Hadrian's Wall in Britain; one of the best examples of a permanent military camp there, with its defenses, street plan, administrative buildings, and barrack blocks. There was also a small civil settlement for traders, etc., at its gates. It is roughly midway along the Wall's length, in Northumberland. At Housesteads, archaeologists have uncovered a market where northern natives exchanged cattle and hides for Roman products. This allowed Roman wares and Roman cultural influences to make their way north.