A cave's rare beauty held a cavernous secret hidden underground.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

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

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

These aggressively sustainable art homes look like something out of 1970's science fiction.

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

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

This aluminum “stairway to heaven” has impaled at least a couple of birds.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

A sprawling collection of over 106,000 toys from around the world.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This high desert botanical garden is a unique display of Northern New Mexico's geology.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The vertical-axis windmills of ancient Persia have been grinding flour for 1,000 years and counting.

A serene temple with stunning stained glass hides in downtown Dallas.

For the last century, this international border within a small town has appeared and disappeared various times.

Troublesome students were detained in this tiny graffiti-covered university jail.

Remnants of a forgotten 1920s speakeasy and Prohibition-era murals were discovered in its basement.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A journey through a collection of classic cars and fashionable artwork.

A temple to modernity, tucked away amid Barcelona's more well known museums.