A submerged archeological park still holds the wonders of a Roman Sodom.

A 16th-century horror show built in a lovely Italian garden.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

A collection of objects supposedly singed by the hands of souls in purgatory.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Climb inside an iron crystal magnified 165 billion times its normal size.

Theme park featuring miniature replicas of European monuments.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

This one-time health resort was used by aristocrats around the world.

Budapest's Communist-era statues, banished to the suburbs.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Legends surround an ancient tree trunk riddled with nails for good luck.

This cubist Vienna church building looks like some sort of alien stonehenge.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Macabre astrological automaton clock dating to the late 1400s.

Looming communist pillar with a Czech twist.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A magnificent Victorian garden that brings the charm and style of old-time aristocracy to the 21st century public.

A well for a well, this anachronistically Indian-styled water pit was built in its small town home in gratitude for a similar favor.

Used as an example in one of the first dictionary entries for "museum" in 1706.