Hadrian's Wall
Hadrian's Wall is the most important Roman monument in Britain and one of the most significant surviving military frontiers of the Roman Empire, an eighty-mile barrier built across northern Britain between the Solway Firth and the mouth of the Tyne between approximately 122 and 130 AD on the orders of Emperor Hadrian during his visit to Britain. The wall, together with its system of milecastles, turrets, forts and the vallum earthwork to its south, represents one of the most ambitious military construction projects in Roman history and defined the northern frontier of Roman Britain for nearly three centuries.
The wall was built primarily from local stone in the central and eastern sections and from turf in the west, with the stone sections providing the most impressive surviving remains today. At its completion it stood approximately five metres high with a parapet walk above, backed by a ditch on the northern side and the vallum, a flat-bottomed ditch with earth banks, on the southern side. Forts positioned at regular intervals along the wall housed the garrisons that maintained the frontier, with the major forts at Housesteads, Vindolanda and Chesters among the most extensively excavated and best-presented to visitors.
The best-preserved sections are concentrated in the central sector where the wall runs along the dramatic Whin Sill escarpment, the hard volcanic rock that provides both ideal defensive high ground and, in some sections, the building material for the wall itself. The view from the high sections of the wall, with the open Northumberland landscape stretching to the horizon on both sides and the wall itself visible for miles in either direction, communicates the Roman achievement of this frontier with extraordinary clarity.
The Hadrian's Wall Path national trail follows the wall for its full eighty miles and the site museums at the major forts hold outstanding collections of Roman finds.