Hadrian’s Wall is a stone and timber fortification built by the Roman Empire across the width of what is now northern England. Begun in AD 122, during the rule of emperor Hadrian, it was the first of two fortifications built across Great Britain. The wall was the most heavily fortified border in the Empire and built to draw a line to mark the edge of the Roman Army’s Empire. Housesteads Roman Fort is a great place to discover more about the Roman Empire history. You can wander the barrack blocks and the hospital, and visit its fascinating interactive museum.