#40: Floating Letters
Have you ever seen something and not been sure whether or not it is real? Seeing optical illusions in real life is one of those things that has the potential to drive someone crazy. Because there are things out there that almost seem like there would be no explanation for them, and then BAM you find one.
The shopping cart sign seems to be a little too see-through for a sign like that. But when you see the back of the adjacent sign, you see that there is, in fact, a sign there, and the letters C A R T S aren’t just floating in the air. The signboard just happens to be the exact same color as the grey sky.