Shoes in Toronto -- A Mystery

This shot represents a real mystery. I was in Toronto in January for several days. Every time I passed this doorway near my hotel--in a very well traveled area near a major mall in downtown Toronto, sat these shoes neatly sitting on the doorstep. Why were they there? Why didn't they walk away? Was the door an unmarked shoe repair shop? I don't know and the mystery will have to remain unsolved...so sad.