From Mount Rushmore to Crazy Horse to historic Deadwood and Custer State Park, South Dakota offers many must see attractions. Marvel at the beautiful waterfalls in Sioux Falls  and the man made Corn Palace in Mitchell. Hear the rumble of the iron horse in Sturgis. Rapid City is the city of presidents with museum tributes and life sizes statues downtown. Further south are two of the worlds largest scenic caves. The northeast has glacial lakes and prairies.