Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

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

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

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

A multi-storied adobe complex has been inhabited for more than a thousand years.

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

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

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

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

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

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

The Ozarks' strangest dwelling.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This historic cliffside mansion uses a natural cave for air conditioning.

An adorably sweet display of sculpted Precious Moments figurines.

An acoustic anomaly with a mysterious cause.

These massive mitts are made of 30 tons of devotional bronze.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.