About Borders of the Roman Empire
Fortifications, Historic, Archaeology, Interesting Places, Other Fortifications, Other Archaeological Sites
The borders of the Roman Empire, which fluctuated throughout the empire's history, were a combination of natural frontiers (most notably the Rhine and Danube rivers) and man-made fortifications which separated the lands of the empire from the countries beyond.
Source From:
Wikipedia
Carlisle, Cumbria, England, United Kingdom, CA8 7DB