Corinium Dobunnorum was the Romano-British settlement at Cirencester in the present-day English county of Gloucestershire.

[2] Over the next twenty years, a street grid was laid out and the town was furnished with an array of large public stone buildings, two market places, and numerous shops and private houses.

Unfortunately, it was built over the ditch of the old fort and the walls cracked and sank, forcing a major rebuilding project in the mid-2nd century.

About fifty years after their construction, there appears to have been a partial collapse and the complex was largely rebuilt to include small chambers around the circuit.

Such buildings continued to be built and occupied throughout the life of the town, but were particularly luxurious during the 4th century, when mosaic floors and fine sculpture were much in evidence.

It remains unclear just where the Diocletian-era provinces of the Diocese of "the Britains" were located, but Corinium is now usually thought to have been the capital of Britannia Prima.

[5] Around the time of the Roman withdrawal from Britain in 410, the town walls were repaired and the forum continued to be regularly cleaned.