Viroconium Cornoviorum, or simply Viroconium, was established about AD 58 as a legionary fortress for the XIVth legion during their invasion of what is now Wales. They were later replaced by the XXth legion until the fortress was abandoned by the military around AD 88. At this time, the civilian settlement, which had grown up around the fort, took over the site. By AD 130 it had expanded to cover an area of more than 173 acres (70 ha). Viroconium was then fitted with an impressive set of public buildings, including baths and a colonnaded forum dedicated to the Emperor Hadrian, as shown by the remains of a fine inscription. Simpler temples and shops have also been excavated. At its peak, Viroconium is estimated to have been the fourth largest Roman settlement in Britain, with a population of more than 15,000 people [Wiki: Viroconium Cornoviorum] .