Manhole covers and coal chute covers are often strictly utilitarian but they can open a window on local history, or just be interesting to look at. I’ve found these on my travels pre-stroke and post-stroke.
I became interested in this after seeing a photo of a very attractive manhole cover in New Orleans. As much as I like looking up as I move around the city, I have to look down too, being mindful of tripping hazards, and sometimes I’m rewarded with, of all things, an interesting manhole cover.
These aren’t manhole covers but three of the roundels in the walkway on the High Bridge between Manhattan and the Bronx, detailing its history.