Franciscan house founded before 1237.

Roman town house excavated by Josiah Parish, 1865.

A large area of unimproved grazing marsh, representing several phases of reclamation and incorporating several marshes, adjacent to the Blackwater Estuary between Salcott Creek and Tollesbury Fleet. A wide range of characteristic features include sea wall, borrow dyke, sinuous former creeks and rills, counter walls, mounds, including red hills, building platforms, and counter walls. The grassland is managed through grazing as an RSPB reserve with public access and is of international importance.

Defences of the fortress and colonia were uncovered and remains of extramural settlement alongside the London-Colchester road.

Excavations uncovered Roman stone houses and part of the street grid.

Roman tessellated pavement, Bowling Green, East Hill House, recorded in 1907.

Roman tessellated pavement in the rear garden of 18 North Hill, recorded in 1847 and again in 1988.

Roman N to S street in the colonia, defined between Insulae 10 and 11 and also between Insulae 18 and 19, and on the line of the Fortress via principalis (MCC760).

"A sketch-plan in the Museum, dated 7.3.1914, shows some large trenches cut by Mr EN Mason.