This "castle" is actually a limestone and quartz formation hidden along a trail.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

The local community brought back this land to transform it into a nature preserve.

A secret rendezvous spot where John S. Mosby and his Rangers would meet to divvy up their loot after raids.

The birthplace of the Herndon Gas Company.

The only U.S. Senator to die on the field of battle is buried in San Francisco but memorialized at Balls Bluff Regional Park.

This statue of two men in a rowboat was erected to honor those who died while fishing in the Chesapeake Bay.

At Brandy Station, Civil War soldiers left their mark on the battlefield and the walls of this small wooden house.

These massive concrete balls were used to mine gold in Virginia.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

This train station inspired the name of a 1970's rock band and provided the backdrop for their album cover.

The only surviving 19th-century water-powered mill found in the Washington, D.C. area.

The Aldie Gristmill was once the largest factory of its kind in Loudoun County.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

Where beautiful signs live on forever.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A stone pillar commemorates the surrender of the extraordinary Apache leader.

Enormous lake at the bottom of a unique cave system.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This spectacular track has run continuously since 1882.

This historic national park is covered in the stunning ruins of red rock pueblos.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A Wild West jailhouse that slid down the mountainside.