A turret was a small watch tower incorporated into Hadrian's Wall, built by the Romans in the 2nd century AD [1]. The turrets were spaced at one-third Roman mile intervals (approximately 495 metres) between Milecastles, with two turrets positioned between each Milecastle [1].
Turret - Hadrian's Wall

Also known as: Hadrian's Wall turret, turret (Hadrian's Wall), Wachturm des Hadrianswalls, 哈德良長城箭塔, 炮塔系统
| Type | Minaret/tower |
|---|---|
| Period | 1 - 500 AD |
| Country | England |
| Coordinates | 55.0168° N, 2.2833° W |
England