A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Black cat statues guard this temple-like Egyptian revival factory.

The bronze uniforms commemorate the vital role of women during World War II.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The remains of the great moral philosopher reside in a university in London.

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

Steadily reminding Czechia of its past.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

An existential riddle in the world's largest ancient castle.

A Jenga-style cylindrical tower of books that appears to go on forever.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

This doorless 20th-century elevator doesn't stop or slow down.

The first museum in the world devoted to sexual gadgetry.

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

Macabre astrological automaton clock dating to the late 1400s.

This spooky statue sits outside a famous Prague theater.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.