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

A sculpture for the sun and stars, created by Nancy Holt.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

Dramatic river bend surrounds a natural red-rocked pedestal.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Rippling sand dunes frozen in the Arizona rock.

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

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

The only road through the heart of Glacier National Park.

A beautiful geyser under environmental threat.

The oldest known university in the world is in Fez, Morocco.

Legends surround this jagged rock formation in the New Mexico desert.

A house carved into a rock in the 1940s.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

This super steep hike ascends 2,000 feet in less than a mile.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Take a break from all the boring business of death at this funeral home mini-golf course.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The world's only known button museum.

A Bibliophile's Dream.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.