Hadrian's Wall (0) IS a limestone and sandstone structure, 1 stretches for more than one hundred kilometres across the island of Great Britain, separating modern-day Scotland 2 England.
It was built almost two thousand years 3 by the Roman army under orders from the emperor Hadrian. Some people think it was built to protect and separate the Romans from 4 barbarians of the North while others believe it was to act simply 5 a border to control immigration and smuggling. Whatever its reason 6 being, Hadrian's Wall represented the final frontier of the Roman Empire.
Many tourists come to see the wall each year and it is possible to climb and stand 7 the parts of the wall and, in the summer months, it is possible to walk along 8 entire length, from East to West.