Between November 1975 and September 1976, a man named Roy Colmer decided to photograph New York City's doors. Not all of New York City's doors. No doors in particular. And in no real particular order. But his aptly named Doors, NYC project amounted to more than 3,000 photos, which now live with the New York Public Library.
If you're like me and want to obsessively look at every single one, the best way to do that is here. But then, I did that so you don't have to. Firstly, note the door on the bottom left. For every dozen-ish non-descript door, you'll find a little treat — like a poster of a cat ...
... or a great store name like "Clogs Of Course" (also bottom left).
See more Doors here