The combination of national parks and monuments, spectacular scenery and top family attractions makes South Dakota a perfect location for a grandparent to tour with the youngsters. Young and old alike will enjoy the Great Plains Zoo in Sioux Falls; De Smet, the "Little Town on the Prairie;" the South Dakota Discovery Center and Aquarium, a hands-on science museum in Pierre; and the many Black Hills attractions ranging from a waterslide to a reptile park and Storybook Island.