An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

A museum of anything and everything Stooge.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

The final resting place of one of the United States's greatest poets.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The world's last remaining store of its kind.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

One of the oldest of its kind.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Location of the Real World's disastrous, and protested, eleventh season.

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

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

For nearly a year, General Ulysses S. Grant was based here during the American Civil War.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.

An overgrown garden stands as a grim marker of an unrealized dream.