Historic funicular railway, believed to be the shortest railroad in the world.

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

An abandoned stretch of highway, deteriorating next to the operational one.

The largest earthwork effigy in the world.

The magic's in the hole!

The world's longest known cave system.

Where manatees are the snowbird vacationers in these balmy Florida springs.

The ghostly remains of an accidental sea.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A semi-scholarly approach to sex.

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

A toxic ghost town sitting atop a massive coal fire.

A layered tribute to the work of mosaicist Isaiah Zagar.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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.

A snapshot of the city's fascinating voodoo culture.

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

Rippling sand dunes frozen in the Arizona rock.

Structure built from the skulls of vanquished foes.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.