One of a series of Milecastles or small fortlets built at intervals of approximately one Roman mile along Hadrian's Wall

Hadrian's Wall

Hadrian's Wall was a defensive fortification in Roman Britain. Begun in AD 122, during the rule of emperor Hadrian, it was the first of two fortifications built across Great Britain, the second being the Antonine Wall, lesser known of the two because its physical remains are less evident today.The...

. Milecastle 79 is the only known milecastle of a unique plan, distinct from the two common types of plan seen in all other milecastles. Milecastle 79 was originally a Turf Wall milecastle, and was subsequently rebuilt with stone.