Start off your trip exploring the National Museum of American History, located in Washington D.C. The museum is home to a vast collection of artifacts that showcase the history of America. Highlights include the First Ladies' Inaugural Gowns exhibit and the Star-Spangled Banner exhibit.
Drive to Philadelphia and visit the Independence National Historical Park. Explore Independence Hall, where the Declaration of Independence and the United States Constitution were both signed, and the Liberty Bell Center where you can see the iconic Liberty Bell up close.
Spend the day at Gettysburg National Military Park to learn about the history of the Battle of Gettysburg, one of the most significant battles of the American Civil War. Take a self-guided tour or participate in a ranger-led tour. Be sure to visit the Gettysburg National Cemetery where Lincoln delivered his famous Gettysburg Address.
Your last stop is the iconic Mount Rushmore National Memorial in South Dakota. The sculpture features the faces of four of America's most iconic presidents carved into a granite mountain face. In addition to the main attraction, there are several walking trails, a museum, and a gift shop to explore.
You will need to rent a car or use your own vehicle to travel between locations. A rental car for four days can range from $100 to $300 depending on the type of vehicle and where you rent it from. Expect to pay around $150-$200 for gas for the entire trip.
If you have an extra day, consider taking a day trip to nearby Baltimore to visit the Inner Harbor or the National Aquarium. If you have less time, skip the National Museum of American History and visit the Smithsonian National Air and Space Museum instead.
The closest airport to Mount Rushmore National Memorial is Rapid City Regional Airport (RAP), located about 35 miles away from the attraction.