The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

This bridge is haunted by the ghost of a distraught mother.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

This stone is a marker of one millionaire's personal vendetta against gravity.

Could this grave be the true resting place of legendary gunfighter "Doc" Holliday? Unclear.

The record holder for the world’s largest peach.

The world's first time capsule lies behind a welded steel door in Atlanta.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

An homage to everyone's favorite prehistoric cartoon family.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The secret city built by the Manhattan Project.

A historic covered bridge, only one of two remaining in North Carolina.

Mystery surrounds a famous marshal of Napoleon's army.

Beside some power panels, a plaque celebrates the history of an alternate world.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Enormous lake at the bottom of a unique cave system.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

An unfinished rail tunnel that has since been used to house cheese and bats.