An enormous and lavish Gothic church in Czechia.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

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

Monument to a suicide protesting the Soviet invasion.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

This spooky statue sits outside a famous Prague theater.

Microscopic scenes; some call it novelty, some call it art.

A series of playful yellow penguins share a serious message about the environment.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

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

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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.

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

An architectural oddity hides in plain sight on this iconic London bridge.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

Charles Babbage's proto-computer, painstakingly brought to life.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.