Frontiers of the Roman Empire. The Antonine Wall became a World Heritage Site in 2008. It has been added to the World Heritage List of the Convention concerning the Protection of the World Cultural and Natural Heritage because of its outstanding universal value. The Roman empire was one of the greatest the world has ever seen. Its frontiers, extending 5,000km through Europe, the Middle East and North Africa, form the largest single monument to Roman civilisation. The Antonine Wall formed the north-west frontier from AD 142 to about 165.

, Kinneil, United Kingdom