This looks very "Sherlocke Holmesian" to me and for some reason the name
of Jack the Ripper is going thru my mind.

However, it is really the driveway for the lobby of the Chateau
Frontenac.

This is where we lost CJ the first time as he wandered about taking
shots. We thought he was right behind us as we left, but
when we turned around, he was nowhere to be seen. That happens now and
then--losing CJ I mean.