Hadrian: Building the wall

In AD122 Hadrian ordered a mighty frontier system to be built across the north of Britain. The result was Hadrian's Wall, a 73 mile barrier stretching from the Solway Firth on the west coast of Britain to the River Tyne on the east coast.
www.britishmuseum.org/the_museum/museum_in_london/london_exhibition_archive/archive_hadrian.aspx