Carlisle (// or local //, from Cumbric: Caer Luel) Scottish Gaelic: Cathair Luail) is the county town of Cumbria, and the major settlement of the wider City of Carlisle in North West England. Carlisle is located at the confluence of the rivers Eden, Caldew and Petteril, 10 miles (16 km) south of the Scottish border. It is the largest settlement in the county of Cumbria, and serves as the administrative centre for both Carlisle City Council and Cumbria County Council. At the time of the 2001 census, the population of Carlisle was 71,773, with 100,734 living in the wider city. 10 years later, at the 2011 census, it was estimated the city's population had risen 6.6%, to 107,500.
Carlisle Castle is situated in Carlisle, in the English county of Cumbria, near the ruins of Hadrian's Wall. The castle is over 900 years old and has been the scene of many historical episodes in British history. Given the proximity of Carlisle to the border between England and Scotland, it has been the centre of many wars and invasions. Today the castle is managed by English Heritage and is open to the public. The castle until recently was the administrative headquarters of the former King's Own Royal Border Regiment now county headquarters to the Duke of Lancaster's Regiment and a museum to the regiment is within the castle walls.