The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A miraculous natural phenomenon known as "the spring that breathes."

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Rare recess caves fill this unbelievably beautiful Ohio park.

This extraordinary geological oddity resembles human-made pavement.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The cluster of boulders near Fort Irwin is covered in military insignia.

Mediums from a psychic utopian community lead a trippy VR journey on a parked desert bus.

The quiet canyon has a tumultuous history involving a doomsday cult.

Seven ceramic sculptures are scattered around this California college campus.

A deserted hodgepodge of experimental structures designed by nearby university students.

A mysterious and endangered parasitic herb from the California desert.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

Burping, gurgling geothermal mud pots by the Salton Sea.