THE FRONTIERS OF THE ROMAN EMPIRE ; Foreword by Prince Hassan bin Talal of Jordan ; Common cultural heritage of the Roman Empire ; The Roman Empire ; Frontiers and trade ; The "Frontiers of the Roman Empire" World Heritage Site ; The definition of a World Heritage Site ; The task ahead ; History and extent of frontiers ; Rome´s foreign policy ; The location of frontiers ; The army and frontiers ; The purpose of frontiers ; Soldiers and civilians ; Military administration ; Research on Roman frontiers ; Inscriptions and documents ; Survey and excavation ; Aerial survey ; Protection and presentation of frontiers ; Future perspectives ; THE EASTERN FRONTIERS ; The Desert Frontier in Syria and Arabia ; Introduction ; Location and natural conditions ; The Roman Frontier in Syria ; The history of the frontier and the frontier road ; Locals in Roman service ; Change and continuity ; The Roman forts in Syria: Cultural heritage in danger ; Dura-Europos ; The Desert Frontier in Arabia ; Historical background and frontier development ; Outstanding Universal Values of the desert frontier ; The Caucasian frontier.