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

This bewitching Babylonian goddess haunts a hallway of the British Museum.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

This five-star hotel was originally a swanky parking garage.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

A unique tribute to the millions of animals who served and died for the British military.

The final resting place to 300 Victorian-era pets hides inside the city park.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

A mysterious artist-run cabinet of curiosities and library.

A faded reminder of what was once a common sight in London during the Blitz.

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

Public access to clean drinking water was an instant hit among the masses.

A Roman spa buried deep beneath the City of London.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Dictionary Johnson’s favorite feline.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A naturally mummified 2,000-year-old man.