The Roman Wall, also known as Hadrian's Wall, is a defensive fortification built by the Romans in the north of England. Constructed under the rule of Emperor Hadrian around AD 122, it stretched approximately 73 miles from Wallsend on the River Tyne to Bowness-on-Solway on the Solway Firth. The wall was designed to protect the Roman province of Britannia from invasions by tribes from the north. The structure included a series of forts, smaller milecastles for garrisoning troops, and watch towers. Today, parts of the Roman Wall are preserved as a UNESCO World Heritage Site, attracting visitors interested in Roman history and archaeology.