Imperial Roman army other military facilities e.g. Hadrian's Wall itself was built by the army. But they also built up much of a province's Roman infrastructure: trunk Roman roads, bridges, docks, canals, aqueducts, entire new cities such as "coloniae" for veteran legionaries, public buildings (e.g. basilicas and amphitheatres). The army also carried out large-scale projects to increase the land available for agriculture, such as forest clearance and draining marshes (e.g. the large-scale drainage of the Fens in eastern England, which were probably developed as a huge imperial estate). The army also excavated many of the mines and quarries that produced the raw materials
Hadrian's Wall to find their way into the construction of Jarrow Priory. The wall fascinated John Speed, who published a set of maps of England and Wales by county at the start of the 17th century. He described it as "the Picts Wall" (or "Pictes"; he uses both spellings). "A map of Newecastle" (sic), drawn in 1610 by William Matthew, described it as "Severus' Wall", mistakenly giving it the name ascribed by Bede to the Antonine Wall. The maps for Cumberland and Northumberland not only show the wall as a major feature, but are ornamented with drawings of Roman finds, together with,