This tower was once used to create ammunition for early settlers.

The largest earthwork effigy in the world.

Winding country roads in eastern West Virginia lead to an extraordinary place populated by fiberglass giants.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A reversed traffic signal that was once violently misinterpreted as a statement on British-Irish relations.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Time travel with sweets across history at this research-based candy store.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

This general store is more than a century old and home to various oddities and antiques.

One of the last active volcanoes on the Eastern seaboard.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

Elevated freight railway turned wildly successful urban park.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.