A large religious complex was constructed at some point in the later 1st century AD, comprising a square-shaped temple enclosure c.1ha. in area, defined by a ditch (with an east-facing entrance) that is almost certainly late Iron Age in origin, with a double portico (with triple walls) around the outside and with a temple, comprising cella and ambulatory (14m in width), in the south-east corner of the corner. The Roman portico itself was set within a larger walled enclosure or temenos (c.2.65ha. in area), which abutted another large (c.4ha.) walled area to the east (see MCC7043 for both), to the north of the theatre (MCC2831) and north of the site of Cunobelin's farmstead (MCC7044).

An area of extensive cropmarks enclosed by the curving dykes following the Gosbecks contours.

Roman theatre at Gosbecks, situated south of the Romano-Celtic temple (MCC2849), and to the east of the (supposed) earlier site of Cunobelin's farmstead (MCC7044). The theatre survives as a low, D-shaped earthwork 1.5m high. Excavations in 1967 identified two construction phases: a wooden theatre was demolished in the 2nd century and replaced by one of turf and clay encircled by a stone revetment wall. The theatre appears to have lasted until the mid 3rd century and it has been estimated the size of this cavea could have accommodated c.5000 spectators, which would have made it the largest of its kind in Britain. See MCC2080 for the Roman theatre in Maidenburgh Street, Colchester.