Wall is Rome's frontier.
The Duke of Gloucester was at Housesteads Roman Fort on Hadrian's Wall to unveil the plaque renaming the wall as part of the new Frontiers of the Roman Empire Trans-national World Heritage Site.
The Roman Empire covered most of western Europe, the Middle East and the north coast of Africa. Much of the frontier followed natural features, particularly the rivers, Rhine, Danube and Euphrates. The wild and windswept Hadrian's Wall was one of only three man-made frontiers.
Hadrian's Wall was inscribed as a World Heritage Site in 1987 but it now joins another man-made border, the 550km Limes in Upper Germany, to become a new Frontiers of the Roman Empire World Heritage Site. More sections will be added as they are put forward and agreed by the World Heritage Committee.