A faithful reproduction of Al-Jazari's enormous water clock.

Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

The deadliest diving spot in the world is also a stunning geological marvel.

An abandoned outdoor movie theater in the Sinai desert.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A vision of beautiful Hindu architecture in the middle of the American South.

Mai Tais and Navy Grog served up in one of the original tiki bars.

Tour the sci-fi-esque reality of governmental disease management.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

This former Texas landfill is flush with 300 million-year-old fossils, all fit for the taking.

This little slice of old Jerusalem in Oklahoma is the evolution of a 90 year old passion play.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

The largest land animal skull ever discovered.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

The only diamond mine in the world where you can keep what you find.

This quirky Arkansas wax museum does not shy away from the macabre and the grotesque.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

A large stone map of Arkansas awaits visitors to its highest point.

This Little Rock legend has survived decades of rowdy crowds, three fires, and a zombie wedding.

Famous for its bio-luminescent inhabitants, known as "Dismalites" .

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.