About London Roman Wall
The London Roman Wall was built between around 190 and 220 AD and stretched for about three miles from Blackfriars to Tower Hill. This defensive wall protected what was then the important Roman city of Londinium.
Prior to the building of the London Roman Wall, Londinium already had a fort, parts of which were now incorporated into the new wall.
Over the centuries, most of the London Roman Wall has been obscured by medieval additions and other development. However, there are some well-preserved parts which can still be seen today. The map highlights one of the more prominent remaining sections of the London Roman Wall, that at Tower Hill.
The Museum of London has more information on the London Roman Wall.