A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

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

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

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

A mythical chimera first sculpted in 1936 as a mix of the main animals of Texas livestock.

A school-themed restaurant where gastronomy is the core curriculum.

A time-capsule monument reminding future generations of the importance of efficient and effective use of natural resources.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Towering basalt columns, a creation of fire and ice.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

Quite simply the largest tree in the world (by volume).

A lake at the bottom of the ocean.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

The Ozarks' strangest dwelling.

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

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

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

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.