The World’s Only Corn Palace is located just minutes off of Interstate 90 in the heart of Mitchell. Our peak season is Memorial Day through Labor Day (late May through early September). When you visit during this time, you see the Corn Palace come to life as it is redecorated annually with new corn, grain and grass to showcase a new theme. However, the Corn Palace is never completely bare, so you will always see a building that is truly an American icon. Daily peak season hours are 8 a.m.-9 p.m.