Caerwent contains the remains of a substantial Roman settlement covering an area of some forty-four acres and there are significant remains from that period. The castle is now thought to be a fort site from that era. The site is about 5 miles southwest of Chepstow (Welsh: Cas-gwent) off the A48 towards Newport (Welsh: Casnewydd) in southeast Wales (Cymru).
Caerwent was founded in about AD 75–80 by the Romans and known to them as the market town of Venta Silurum. This was an important settlement of the Celtic Brythonic Silures tribe. This tribe became Romanised following the conquest of Britain.
Link: Cadw - Caerwent Roman Town
Image: Some of the Roman remains in Caerwent