The parking garage in the building where I work is underground. The entrance and exit are at the highest level. The levels in the garage are joined by spiral ramp.
A few weeks ago I happened to drive in (rather than taking the train) and ended up working late.
As I was walking to my car (parked on the lowest level, of course), I noticed no one was around, no cars were leaving, and I grabbed the camera from my bag and jumped in to the entrance to the ramp at the very bottom of the spiral.
I pointed the camera upward a took a few shots (listening for any oncoming cars). Quickly it became obvious: This is not a photogenic spot.
Oh well. Not all ideas turn out to be good ones.