Earlier quoted context omitted.
From the article: London's original wall was 2 miles long, 6 metres high and almost 3 metres thick at its base with a link to a graphic map and guide: https://colat.org.uk/wp-content/uploads/2024/07/London-Wall-... that states it ran from the Tower of London to the Museum in the Barbican.
There is a London Wall Walk, starting at the Tower of London. Text copied from the plaques at the postern: (thanks Google Lens) > The London Wall Walk follows the original line of the City Wall for much of its length, from the royal fortress of the Tower of London to the Museum of London, situated in the modern high-rise development of the Barbican. Between these two landmarks the Wall Walk passes surviving pieces of…
Google Lens appears to have missed the point here.