Detroit, Michigan, circa 1912. “Metzger bicycle shop. Detroit City Gas Co.” This photo of a cycle (and phonograph) shop was taken to show off the gaslight fixtures. 8×10 glass negative, Detroit Publishing Company.
Excelsior Autocycle probably. Related to Schwinn bikes back then. There are a few of them on the left side of the picture on the floor, followed by some Indians. Any of those motorcycles are probably worth as much as the building that they are sitting in today, and not just because the building is in Detroit.