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

A stealthy Apache hideaway that became the haunting site of a mass grave.

This historic national park is covered in the stunning ruins of red rock pueblos.

This remnant of an ancient Persian city is considered to be the world's largest single-span brick vault arch.

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

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

Rippling sand dunes frozen in the Arizona rock.

A psychedelic labyrinth on the San Francisco bay.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A regular looking rock with an unbelievable history.

An artist's vision for connectivity spans seven continents and 16 countries.

This outdoor observatory offers stellar views and a scale model of our solar system.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

Mediums from a psychic utopian community lead a trippy VR journey on a parked desert bus.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

A black and white painted wall creates an optical illusion in the California desert.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

The ghostly remains of an accidental sea.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

Version of the French Riviera destroyed by the sea.