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Roman Empire Map

A reference map of the Roman Empire at its greatest extent under Trajan in 117 CE — from Britain to Mesopotamia, the Mediterranean an inland Roman sea.

A map of the Roman Empire at its greatest extent under Trajan in 117 CE, stretching from Britain to Mesopotamia around the Mediterranean.
The Roman Empire under Trajan, 117 CE · modern mapmodern map · Joyfulmapper · Wikimedia Commons (CC0)

By the second century CE the Roman Empire encircled the entire Mediterranean — mare nostrum, 'our sea' — and reached from the Atlantic coast and Britain in the north-west to the Euphrates and, briefly, Mesopotamia in the east. It was the largest and most enduring empire of the ancient West.

Its frontiers (the limes) ran along great rivers and fortified lines — the Rhine, the Danube, Hadrian's Wall in Britain — marking where the policy of expansion gave way, under Hadrian, to one of consolidation. Within them, a common law, a network of roads, and (increasingly) a common citizenship bound a vast diversity of peoples into a single order.

Key locations

  • RomeThe capital and heart of the empire.
  • Hadrian's WallThe fortified frontier across northern Britain.
  • The Rhine–Danube frontierThe great river frontier in Europe.
  • AlexandriaThe second city of the empire and Egypt's capital.
  • ConstantinopleFounded 330 CE; later capital of the eastern empire.