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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

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.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Just a man taking his prehistoric pet for a stroll.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

Tirelessly maintained by a Wisconsin man named JFK.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

A bizarre house filled with an astounding array of collections.

This museum offers a journey back to the Belle Epoque era of Romania.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

The growing stones of Romania.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Gigantic Romanian salt mines used to heal respiratory conditions.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

This bone-filled cave got its name after they found 140 bear skeletons inside.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

A giant portrait of an ancient king looms over the river.