Believe it or not, the answer is quite simple. The bigger ice cream sundae question is where did the delicious treat get its official start? A sundae is called a sundae because it was created to be eaten on Sunday. No seriously. Unsolved Mysteries.com More than one city in the United States claims to be the home of the ice cream sundae. Chicago’s claim dates to around the 1890’s. But Wisconsin’s claim to sundae fame began...