An unusual round church in London with a Templar past.

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

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Catacombs turned marketplace.

Hear the quietest sound from across the dome.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

Ship-sized kinetic sculptural fantasy.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

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

A living memorial to the trees London lost during the Great Storm of 1987.

The bones of two medieval royal lions were discovered at the historic fortress.

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

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

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

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

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

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.