Weirdest places I have been in include the inside of the tanks of aluminum tanker trucks when I did the crap labor jobs for a trucking company for two summers. After they were steamed clean, they still had to have the dust rinsed off the inside with a hose. The sound was only slightly weird but as the shine started to return, the light from your trouble light started to make 3d points of colored light all over the place in front of your eyes that moved as you did. Very disorientating.

With great power comes Awesome irresponsibility.