A relatively short-lived Norman fortification located on Ludgate Hill, this tower or ‘castle’ was probably built in the late 11th century and was one of several new fortress located in the city post 1066.

Believed to have been built by Gilbert de Monfichet – a relative of King William the Conqueror who hailed from Rouen (and is believed to have been connected with Monfichet family of Stansted Monfichet in Essex), the tower apparently comprised a stone keep on a motte surrounded by ditches. It was located on Ludgate Hill near the city wall, to the north of Carter Lane, on what was then the western edge of the walled city.

First appearing in documents in the 1130s, it was apparently strengthened during a revolt against King Henry II in 1173-1174 but was eventually demolished in the 13th century (some accounts suggest it was King John who ordered its demolition in 1213, after Gilbert’s successor Richard was banished).

The site was given to the Dominican priory of Blackfriars in 1275 (there’s a suggestion that the tower was already in ruins by 1278 meaning it must have been at least partially demolished some time prior). Apparently some of the masonry from the tower was used in the priory’s construction.

Excavations in the 1980s revealed the remains of a ‘V’ shaped defensive ditch – interpreted as one of three defensive ditches which protected the tower – and rubbish and cess pits – interpreted as standing within what was the tower’s bailey.