The Wildlings and Whitewalkers have quite the wall to get over, close in height to the Eiffel Tower.
Although history offers us a number of famous walls, Hadrian’s Wall is the closest to the wall the Night’s Watch gaurds.
Construction of Hadrian’s Wall began is AD 182 and was completed in 6 years stretching 72 miles in length.
The wall was built to protect the empire from the barbarians, or the ancestors of today’s Scotts. Sound like the Wildings? Perhaps.
Number 2: Edward of Lancaster