The West Gate of the Lower Roman City, dating back to the 4th century, to defend the settlement in the Upper City.
The Lower West wall was strengthened in the 3rd and 4th centuries using other demolished structures from around the city, including a decorated cornice which is on display in the foyer of City Hall. This gateway would have been an impressive structure made of large blocks of masonry.
The gateway is likely to have been in use until the 11th century, particularly as it gave access to one of the Bishop of Lincoln's residences in the suburb of Westgate. The site was excavated in the 1970s and the City Hall, housing the city council, is now built around and over it.