Every president in history is immortalized in bronze in downtown Rapid City.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

Chicago’s incendiary role in the labor movement.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

The world's longest known cave system.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

The only presidential monument to display a late POTUS's actual casket.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The homestead of American patriot John Adams.