Brough Castle is a ruined castle in the village of Brough, Cumbria, England. The castle was built by William Rufus around 1092 within the old Roman fort of Verterae to protect a key route through the Pennine Mountains. The initial motte and bailey castle was attacked and destroyed by the Scots in 1174 during the Great Revolt against Henry II. Rebuilt after the war, a square keep was constructed and the rest of the castle converted to stone.