Clerks' well at Clerkenwell
First mentioned in 1174. Closed by about 1850 and effectively lost. Rediscovered in 1924 during building works.
We normally find pictures of our subjects out on the web but we just could not find a picture of the Clerks' well so we went back and took our own, through the glass. It may not be a very good picture but it's the only one there is.