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
Chapel of St Peter-on-the-Wall Chapel of St Peter-on-the-Wall The Chapel of St Peter-on-the-Wall, Bradwell-on-Sea, Essex, is a Grade I listed building and among the oldest largely intact Christian churches in England; it is the 19th oldest building in the country and is still in regular use. It dates from between 660–662. The Chapel is said to be that of "Ythanceaster" (Bede, "Historia Ecclesiastica" 3.22), originally constructed as an Anglo-Celtic church for the East Saxons in 654 by Cedd astride the ruins of the abandoned Roman fort of Othona. The current structure was most likely built around 660–662, incorporating the Roman bricks and stones. Cedd