Many of us don’t think twice about taking photos of our food for Instagram and other social media, but this sidewalk sign might cause you to look twice. On a similar note, did you know that there is evidence that sidewalks were built in ancient times? Yes, it was claimed that the Greek city of Corinth was paved by the 4th-century, and the Romans were particularly prolific sidewalk builders – they called them semitas. Continue reading for more funny and creative sidewalk signs that will make you look twice.