St Botolph's Priory
Founded between 1093 and 1100, the priory of St Botolph was one of the first religious houses in England to adopt Augustinian rule. It is located on the south-facing slope of a small valley outside Colchester's south-east gateway. It was preceded by an earlier church, which was served by a community of secular canons. The priory church, built in the 12th century (and dedicated in 1177), survives above ground, and there are also below-ground remains of cloistral buildings. The west front contains the traces of the earliest major round window in England, dating from around 1150. The extent of the precinct has not been accurately established.
The site is open to the public, and managed by Colchester Borough Council. More information about visiting St Botolph's Priory is available from the English Heritage website.