I've had a recurring bad dream all of my life about walking around trapped in dusty old buildings. Lots of long dim hallways, none of the doors open, furniture out of place, and I'm always alone trying to get outside. I had a flashback while walking down this hallway in the Denver Museum of Nature and Science. The only light came from my camera's flash. There was a reception of some kind that was being held later that evening in this wing of the museum and so there were tables with silver decanters and buffet tables set up around various exhibits full of taxidermied animals and the usual furniture had been moved into various hallways. Things started to feel pretty surreal.