Here is an upside down house. It's actually a reflection in a large puddle of water, and I rotated in vertically so it looks right side up. The 2nd picture is the original, and I think that perspective makes it more obvious that it's a reflection. What I like about the first one, is that it confuses the mind, and looks "ordinary" until you look closer and realize something is not right about it. What do you think?? Here's the "unflipped version"