The prototype for all Nazi concentration camps.

Shop of curiosities with a dinosaur museum tucked in its basement.

Some of the clearest water anywhere in the world.

This large cemetery is known as the museum of granite sculptures.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

An unlikely hit, this museum is dedicated to the inventor of instant ramen and cup noodles.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Eclectic collection of dark and macabre antiques.

Built after the 1991 discovery of one of the world's most complete T.rex skeletons in the nearby hills.

Kitschy steak joint where customers can cook their own meat over an eternal flame.

Cavernous opening completely encased in Karst limestone.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

International delicatessen has been owned and operated by the same family for more than 110 years.

Harlem park dedicated to compulsive hoarders killed by their own junk.

Competitors race wooden replicas of pungent blue cheese.

Abstract dinosaur models in London.

A massive metal lobster welcomes tourists to a roadside restaurant.

The Magical World of George Phar Legler.

Japanese island famous for poison gas and fluffy bunnies.

Old Danish castle immortalized in Shakespeare's Hamlet.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.