You would see a regular bike like this one with the only exception that this bike is set up on the wall above tables in a restaurant.

This restaurant is in Downtown Mexico City, it is call Punta Arenas and is inside a little mall where there is a hotel and some boutiques.

If you think this is unusual, I remember there was a tennis court on another wall downtown. It may be that they don’t know what to do with those huge plain building walls.