The only thing still moving in this town is the eponymous hot spring.

One of the indelible moments of the American Revolution took place at this location.

The longest and widest floating bridge in the world.

The highest bridge in America was built for an almost unnervingly small amount of money.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

A river runs through this remote valley in a very unexpected way.

A remote sandstone plateau named for a legendary cattle rustler.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

The wild west is still alive and well at this authentic mining town watering hole.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

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

"Only the devil could play golf here."

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A bit of retro transportation flair preserved in the world's largest department store.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.