In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A wondrously macabre treasury of obscure antiques and unusual oddities.

This mysterious and creepy location instills a strong sense of foreboding in all visitors.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Drink and dine in a coral cave that's at least 120,000 years old.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

This public space is speckled with the eerie remnants of a defunct amusement park.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Caves famous for the dragon-slaying saint who lived there.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

This early pioneer landmark is one of the oldest buildings in this part of Kansas and one of the few Dutch mills ever built in the state.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

For more than 25 years, this Philadelphia store has been offering a wide selection of Victorian oddities and antiques.

This magical trail takes visitors on a journey round miniature wooden houses on the picturesque Denmark River.

Intricate, eye-catching, award-winning rubber sculptures liven up this Pennsylvania town.

This retro diner claims to be the birthplace of poutine.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.