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

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

This hidden green space is the city's second largest conservatory.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An incarceration museum on the spot of possibly the oldest prison in England.

Rebuilt remains of a temple to Roman god Mithras.

This South London cemetery holds the remains of more than 15,000 people.

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

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

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

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

Murals of the wild parties once held on the frozen River Thames.

A quiet memorial to those who died saving others in the heart of the City of London.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

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

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Hear the quietest sound from across the dome.

The London statue that imitates passersby.

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