A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

This charming woodland trail is peppered with poetry.

Follow the steps, and this roadside artwork will teach you how to dance.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

The longest and widest floating bridge in the world.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Windswept and remote, this island was once the home of a rare mammoth and today is home to a rare tree.

A blacklight journey through a celestial art exhibit.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

One-time largest man-made structure in the world will be a park in 30 years.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

San Francisco’s condensed garden of incredible plant growth.

This interpretive path lets you get up close and personal with dinosaur bones.

A unique piece of graffiti offers a little slice of local history and mystery.

A smoke stack so large, the Washington Monument could fit inside!

This mysterious artificial cave has long puzzled New Englanders.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

A peaceful, unique botanical garden complete with waterfalls, mini islands, and swans.

For decades, it has disappeared and reappeared as water levels rise and fall.

So many migrating birds roost on the bridge, it has a special summer speed limit.

This highway overpass was named after the tragic disappearance of a young mother who got mixed up with the wrong people.