I won’t forget SD because I’ve definitely been there.
Rapid City, Hot Springs, Custer State Park, the Needles, the pigtails, Crazy Horse, the Badlands, Pine Ridge, Rosebud, The Corn Palace...Wounded Knee.
Its a great state if you love 360 degree horizons and quiet. Also you can see the milky way in town. I love it there, nice quiet life.