Atop an active stratovolcano, two lakes separated by a narrow strip of land.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

Home to the deepest rift anywhere on Earth.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

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

A beautiful geyser under environmental threat.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Dramatic river bend surrounds a natural red-rocked pedestal.

The location where the iconic movie character declared it was time to go home.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

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

Oddly shaped rock formation, misassociated with a nearby utopian community.

The fifth-longest natural arch in the world, and the longest outside China.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Despite its name, this route in southern Utah offers a heavenly day trip.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

Visit this church that's shaped like a giant glass pump either to cater to women or to reference a tragic local tale. Or both.

Macabre astrological automaton clock dating to the late 1400s.

Steadily reminding Czechia of its past.

The majority of the highest mountain in Poland is actually located in a different country.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.