The inner bailey ditch of Colchester Castle.

Post-Medieval House, consisting of three tenements (demolished).

16th & 17th century house, now demolished.

11th century (c.AD 1078) Norman Castle Keep built on the foundations of the Roman Temple of Claudius and Bailey defences. The keep was built in at least two main phases and its initial form consisted of a single storey stone keep with crenellated parapet wall. During the early 12th century, the keep's outer walls were raised by at least one storey and a fore-building was added on the south side to protect the main entrance. A barbican replaced this in the 13th century. The castle's earthwork defences consisted of an upper and 'nether' or lower bailey bank and ditch (to the north, and downslope to the town wall) with at least one entrance in the upper bailey's south-west corner, occupying c.5.7ha. in total area. The upper bailey defences had been built by 1101. The northern and eastern arms of the upper bailey defences survive as landscaped earthworks within Castle Park. The southern arms lies just to the north of the High Street, and the western arm, below or just to the east of Maidenburgh Street. The nether bailey is possibly part of a second phase, of the late 12th century. The southern end of the eastern arm of the nether bailey survives as a landscaped ditch in Castle Park. The western arm lies below or just to the east of Maidenburgh Street. A masonry chapel and domestic buildings stood to the south of the keep. The keep was partially demolished by John Wheeley in the 17th century.

Late 15th or early 16th century Inn.

Roman and Medieval east gate of the walled town, now demolished.

Medieval water mill of possible 11th century origin, demolished in 1610.

Medieval watermill on River Colne, dating from pre 1066 to 17th century.

Early Medieval sherd of Thetford-type ware from evaluation at 21 North Hill, recorded in 1994.

Ancient and modern river crossing. The current bridge is Victorian in date.