Traveling collection of amazing automata.

A clock designed to run with perfect accuracy for 10,000 years.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

An unusual round church in London with a Templar past.

The largest of London's subterranean rivers and once a mad, bad center of London life.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Hidden beneath the streets of London is a secret subway that only carried mail.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The modern birthplace of Irish freedom.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.