A monument to the groundbreaking environmentalist sits near the place where she first experienced the sea.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

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.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

These 20-foot sculptures will help guide you from the local train station to the local sculpture garden.

A unique sculpture park that specializes in the huge and bizarre.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

A semi-scholarly approach to sex.

This downtown Dallas art installation is always on the lookout.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

A building so large that it has its own weather.

A winding, blood-red tunnel of hardened lava navigable by foot.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

Few of the many visitors to this resort town know of its hidden Maya ruins.

See massive fossils that are over 200 million years old in northeastern Arizona.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.