In AD 97, the city was designated a
colonia by the Emperor
Nerva. A colonia was the residence of retired
legionaries and enjoyed the highest status of city in the
Empire. The legionaries were given farmland in the surrounding district, and could be called upon as a
Roman auxiliary armed force. The city was built within the legionary fortress and used the same rectilinear street plan and ramparts. A large and impressive administrative
basilica and
forum market-place were built in the town, as well as many fine homes with
mosaic floors. On the outskirts of Gloucester, archaeologists have discovered evidence of a mint producing counterfeit coins. This would confirm a mint in Gloucester. The Roman wharf where goods were shipped via an inlet from the River Severn has been excavated at Upper Quay Street and which dendrochronological dating has shown was built from 74 AD. At its height, Glevum may have had a population of as many as 10,000 people. The entire area around Glevum was intensely Romanised in the second and third centuries, with a higher than normal distribution of villas, as a result of its suitability for the traditional intensive
Roman farming methods. Today, some of the best examples of
Roman villas in Britain, including
Chedworth villa and
Woodchester villa, both famous for their Roman mosaics, are not far from Glevum. ==Decline==