A natural formation that resembles a camel resting in the New Mexico desert.

You might want to bring a rain jacket to this travertine triple waterfall.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Measuring approximately 200 feet long, Swampy is the world's largest alligator-shaped building.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Housed inside a former munitions plant that was once one of the largest in the country.

A wonderfully curated used bookstore in an airport.

A place to eat for on-the-run agents and espionage enthusiasts.

A bizarre house filled with an astounding array of collections.

Before its closure in 2002, this South Dakota mine was the largest and deepest gold mine in Western Hemisphere.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Largest man-made excavation on earth!

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A house carved into a rock in the 1940s.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

The world's largest mineral hot springs is home to a herd of bison, a free public bath house, beautiful mineral formations, and a terrifying swinging bridge.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

A small Wyoming town is home to the state's oldest-operating soda fountain.

An architect's childhood fantasy treehouse made real.

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

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.