As far back as I can remember, this stone house has been a part of the Como Park Zoo. I don't know if the building was ever a working water wheel but from the discoloration, it probably was at some point. Now, it is just a beautiful back drop for this colorful flower garden. It is near the entrance to the zoo from the Conservatory Parking lot across from the outside Oraguatan exhibit. Como Park is unique as admission is still FREE though donations are gladly accepted.