This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Museum dedicated to awful artwork.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This naturally-sourced hot spring is now home to a clothing-optional resort.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

The angel of death appears to weep black tears at this grave marker.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The intriguing personal collection of a professional demon-chaser.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Quite simply the largest tree in the world (by volume).

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

Two thousand artifacts from around the world collected by one woman who loved to travel.

An acoustic anomaly with a mysterious cause.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.