This now-abandoned part of the original transcontinental railroad route provides a surreal driving and historical experience.

A river runs through this remote valley in a very unexpected way.

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

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The bronze uniforms commemorate the vital role of women during World War II.

World's smallest skyscraper, the product of a remarkable con.

Conveniently located within binocular range of a nuclear bunker, the "summer camp" area was a painfully obvious spy house.

Known as the most resilient water tower in the region.

This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

This building contains a door only used by members of the royal family.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

A picturesque example of brute-force engineering conquering nature.

A showcase of engineering might that was also symbolic of westward expansion.

Where you can experience the story of Appalachia, as told by Appalachians.

A unique museum where guests can rent and operate a locomotive.

It’s all about the Benjamins at this Atlanta museum with interactive exhibits.

This moving cemetery sphere is a slowly rolling stone.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Once a meeting point for great thinkers, and the midpoint of the country.

This friendly fellow was built to honor an advancement in mineral processing.

This contemplative sculpture made out of old machine parts is meant to be the first in a series of sculptures around the world.

Once the last route taken by condemned prisoners.