One of America's first dinosaur parks gives a window into Depression-era paleontology.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The prototype for all Nazi concentration camps.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The West's first incursion into the Afghan world lies buried beneath a military base.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Strange red rock formations that have been attributed to a higher power for hundreds of years.