The famous wall built to safeguard the Roman Empire's northern frontier is Hadrian's Wall. Constructed around 122 AD during the reign of Emperor Hadrian, this fortification stretched approximately 73 miles across northern England, from Wallsend on the River Tyne to Bowness-on-Solway on the Solway Firth. Its primary purpose was to protect Roman Britain from the tribes in what is now Scotland, serving as a defensive boundary and a means of controlling trade and movement across the border. Hadrian's Wall also facilitated the integration of Roman military and civilian life, symbolizing Roman engineering prowess and the Empire's reach.