context: The historic heart of Newcastle is the Grainger Town area. Established on classical streets built by Richard Grainger, a builder and developer, between 1835 and 1842, some of Newcastle upon Tyne's finest buildings and streets lie within this area of the city centre including Grainger Market, Theatre Royal, Grey Street, Grainger Street and Clayton Street. These buildings are predominantly four stories high, with vertical dormers, domes, turrets and spikes. Richard Grainger was said to 'have found Newcastle of bricks and timber and left it in stone'. Of Grainger Town's 450 buildings, 244 are listed, of which 29 are grade I and 49 are grade II*.
question: Small towers on top of a larger tower, or sometimes at the corner of a building such as a castle are called?
answers.text: turrets