Before there was the Great Wall of China, there was Hadrian’s Wall. This wall marked the northern boundary of the Roman Empire in Great Britain. Made of beautifully dressed stone it was built in 122CE. It ran from the North Sea on the east to the Atlantic Ocean on the west. It was 73 miles long, 15 feet high, and 9 feet thick. Depending on which story you hear, the Romans either built the wall to keep out the hostile Pics, a Celtic tribe, or to keep in the peoples owned by the Romans.
Today, very little is left of the wall, the forts, or the towns that supported the wall’s operations. After the Romans left, the locals used the stones to build their homes, farm buildings, and fences.
Every Roman mile along the wall, the Romans maintained a small outpost or guardhouse that we call a “milefort”.