Located on Pilgrim Street near St Paul's, London is this stone bollard. It is said to possibly be a surviving piece of the Ludgate, London's western city gate, now long vanished.
https://en.wikipedia.org/wiki/Ludgate
https://londonist.com/london/history/is-this-a-missing-piece-of-the-old-ludgate
41 photos taken in October 2018 with a Sony Nex 3 and processed in Agisoft Metashape.