Uncover North Dakota and South Dakota's best-kept secrets, such as the Corn Palace in Mitchell (where thousands of bushels of corn, wheat, grain, and grasses are used to create beautiful mosaics) or the Fort Seward Wagon Train, a one-week wagon train reenactment. Trace part of Lewis and Clark's route along the Missouri River; try pheasant ravioli at Minerva's in Sioux Falls, South Dakota; or pay a visit to the world's largest Holstein-cow replica in New Salem, North Dakota.