The Droste effect — in which an image contains a smaller version of itself, which in turn contains a still smaller version, and so on — was popularized by and named for a Dutch confectioner. In theory this recursiveness could go on endlessly; in practice it's constrained by space, by the resolution of the image, and by the resolving abilities of the human eye.
A blocklong outer wall is prime Droste territory, especially when it sports a collage dedicated to an American chocolatier. The inset shown in the second photo, however, doesn't take full advantage: It depicts what you might call the autographed corner of the building, nothing more.
Madelaine Chocolate Novelties
9603 Beach Channel Dr. (Beach 96th-Beach 97th Sts.), Rockaway Beach, Queens
(Mural on the Rockaway Fwy. side of the main building, one of a complex)