Portland, Oregon’s Ann Arbor, Michigan’s buildings sport “fairy doors” that are just a few inches high, set unobtrusively into their facades. These doors appear to be purely ornamental (or, possibly transdimensional gateways into the Land of Faery) and this site collects images of them. Link
Originally I was sort hunh? But I have to say it’s actually very interesting how many doors this photographer has captured… And how much detail went into them.