King Arthur

To man its defenses along Hadrian's Wall, Rome built forts, or “milecastles,” at prescribed intervals. The foundations of some of those milecastles still remain and are prominent features of English walking tours. The wall itself (like the later Antonine Wall built further north) conformed to the surrounding terrain.

A few examples will allow you to “visit” the remains:

• Milecastle 42, west of Cawfield Crags.

• Milecastle 48, near the village of Gilsland.
  

• Milecastle 39, from Peel Crags.
  
  
• Tracking its surrounding terrain, Hadrian's Wall was built over hills, through valleys and near water.

Scottish clans attacked and overran the wall in the 2nd and 3rd centuries. Since it was never as effective as Hadrian had hoped, it was largely abandoned in the 4th century.