Hadrian's Wall Milecastle, Henshaw, Northumberland
Hadrian’s Wall was built between AD122 -128. It stretched 117km across Northern England from the river Tyne to the Solway Firth. At every ‘Roman mile’ (approx 1.5 km) along the wall a mile castle was built. These were small forts for up to 50 men. Between each of these were two turrets. There were also at least 16 major forts such as Wallsend, Housesteads and Vindolanda on or near the wall. Around 2,000 soldiers were needed to patrol the wall.