A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

Stairs often replace streets on the steep slopes of this old mining town.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

The biggest solar telescope in the world helps reveal the secrets of our sun.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Limestone caves with spectacular showcase chambers.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

Taking the 3D art experience far beyond blue and red glasses.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

A stunning landscape of bunkers that once stored chemical weapons.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

Entering this curiosity shop is like stepping into a mad scientist's lab.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

An obscure waterfall that looks like something out of a fantasy novel.

A bronze replica of half-consumed salt lick honors a quirky town tradition.

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

Astonishing rock formations dot the Brimham Moor landscape.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.