A wonderland of caves in eastern Iowa.

Multiple waterfalls and several historic CCC buildings anchor this state park in Oregon's Willamette Valley.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.

This balancing rock is one of Utah's most unusual geological formations.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

This U.S. natural reserve is an ancient spiritual place and rock climber’s paradise.

A hidden canyon deep in the woods of Indiana offers visitors a spectacular experience in nature.

This cliffside memorial marks the final resting place of a lonely violinist.

A museum chronicling pioneer life constructed over Interstate 80.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

The site of abandoned cable car system provides expansive views of Tutuila and nearby capital Pago Pago.

Rocky cove with large smashing waves tied to an important Samoan cultural story.

The world-record holder for the longest bridge stretching continuously over water.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The curiosities and wonders of pharmacy in a delightful historic building.

The only rotating bar in New Orleans has been slowly spinning since 1949.

In West Virginia, you can walk across the longest single-arch bridge in the Western Hemisphere.

Soak in the sacred vibes at this beloved food and coffee hangout inside a former church.

An abandoned coal mine reached by a steep hike.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Amazing views of Long Island Sound can be seen from this mountaintop tower.