The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

A beautiful geyser under environmental threat.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This cave holds a surprisingly colorful variety of geological oddities.

Why have you never heard of the second most popular tourist site in New York?

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A museum devoted entirely to the rattlesnakes and snake-related art.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.