Hadrian’s Wall was constructed in 122 AD at the behest of the Roman Emperor Hadrian. Keen for peace and safety within his empire, fearing attacks from Pictish Scotland, Hadrian commissioned a long wall to act as a border, snaking its way from the Tyne to the Solway Firth. It was built up to a height of 15ft in places and was interspersed by milecastles, which functioned as gates, depots and mini-barracks. The best-preserved portions of the Wall are concentrated between Chesters Roman Fort, four miles north of Hexham, and Haltwhistle, sixteen miles to the west, which passes Housesteads Roman Fort, Vindolanda and the Roman Army Museum. Most people come to walk or cycle the length of the Wall. There are plenty of lovely places to stay and eat around and along the Wall; the handsome market towns of Hexham, Haltwhistle and Corbridge also make good bases.