This conservation area is also home to many of the region's desert tortoises.

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

Explore 10 acres of environmental sculptures.

A self-built castle made by a mysterious man.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

Rippling sand dunes frozen in the Arizona rock.

The world's first commercial spaceport is a disappointment of cosmic proportions.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A clear blue swimming hole with hidden caves, still unexplored.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

See the sky in a new way through this art installation.

Artist James Turrell's ode to dawn and dusk on the campus of Rice University.