Spend a day visiting Mount Rushmore , the Needles Highway , and Sylvan Lake . Add a day to hike Harney Peak , followed by a trip to Hill City  to enjoy the boardwalk shops and art galleries . The best attractions include Reptile Gardens  and Bear Country U.S.A. 
On the third day, Prairie Edge  is a must see in Rapid City , and the Journey Museum  provides the best overall introduction to Native American culture and to the history and geology of the region.
Add a visit to Crazy Horse Mountain  and Custer State Park . Drive the Wildlife Loop , traveling from the State Game Lodge  south. Continue south to Wind Cave National Park  for a cave tour , and visit the Mammoth Site in Hot Springs .
Slow everything down. Do the Badlands with an overnight stay to enjoy the park at its best at sunrise or sunset. Expand your time in the Northern Hills  to include a trip to Spearfish . Visit the D. C. Booth Fish Hatchery  and the Termesphere Gallery . Drive down the Spearfish Canyon Scenic Byway .
Spend a night in Custer State Park , dine at the State Game Lodge or the Bluebell Resort . Enjoy horseback riding in the park  or a chuck wagon dinner . Add Jewel Cave National Monument  to your itinerary.