The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

A little-known hot spring haven right below the highway.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

You might want to bring a rain jacket to this travertine triple waterfall.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

Even in death, he's still your huckleberry.

Colorado's only active volcano last erupted around 4,000 years ago.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

A multiversal transit station located right below a highway interchange.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

The alley connecting two of country music’s most historic venues has a rich history of its own.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The final resting place of New Orleans' most famous voodoo priestess.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.