The hidden lair of an alchemist rediscovered in a 2002 flood.

This automated sculpture of two men peeing will spell out text messages with their micturition.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

The first museum in the world devoted to sexual gadgetry.

The bizarre headgear looks like it was made for a fool, not a king.

Explore Hull's historic Old Town by following the sea creatures scattered throughout its charmingly cobbled streets.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

England's largest white horse isn't even white.

This mummified mermaid corpse is an aquatic curio that was eventually revealed to be a fake.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.