A section of London's Roman wall and Medieval bastion in the basement of the north west building of the Bank Of America site, 2 King Edward Street, London.
https://historicengland.org.uk/listing/the-list/list-entry/1003773
Excellent article by IanVisits with more details:
https://www.ianvisits.co.uk/articles/museums-by-appointment-the-london-roman-wall-and-bastion-27026/
860 photos taken in June 2022 with a Sony a7R III and processed in Reality Capture.
Thank you to the security team, especially Liam for the tour and access permission.
The top of the wall was tricky to photograph and partly occluded.