The oldest working mechanical clock in the world.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

Pop culture has helped to keep this iconic British building from being destroyed.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

Catacombs turned marketplace.

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

This 1920s Dutch barge is now a floating bookstore.

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

The curios of pharmacist and collector Henry Wellcome.

A measuring mishap led to these artificial stone ladies losing their stomachs.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Down a pint of ale where the Bishop of Ely's servants slept in 1546.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The Tudor-style cottage in the middle of the square is not quite what it seems.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The taxidermied remains of a once-great parrot.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

A hands-off space for graffiti artists to hone and display their skills.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.