The Wall: Rome's Greatest Frontier

Hadrian's Wall is the largest and one of the most enigmatic historical monuments in Britain. Nothing else approaches its vast scale: a land wall running seventy-three miles from east to west and a sea wall stretching at least twenty-six miles down the Cumbrian coast. Many of its forts are as large as Britain's most formidable medieval castles, and the wide ditch dug to the south of the Wall, the vallum, is larger than any surviving prehistoric earthwork.



Built in a ten-year period by more th...