The original Corn Palace, called "The Corn Belt Exposition" was established in 1892. Early settlers displayed the fruits of their harvest on the building exterior in order to prove the fertility of South Dakota soil. The third and present building was completed for it first festival at the present location in 1921.
The exterior decorations are completely stripped down and new murals are created each year. The theme is selected by the Corn Palace Festival Committee and murals are designed by a local artist.
I believe I was lucky with all the junk food present it was a little bonus:-)
There was also a display of old farm equipment...
Not worth a trip to SD but if you are close to Mitchell you have to visit the Corn Palace