The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

There's an exclusive Beefeaters pub hidden in the Tower of London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

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

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

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

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.

The television series' iconic giant foot was borrowed from this classical painting.

London's smallest police station is barely the size of a phone booth.

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

The medieval woodcut-style artwork chronicles life in medieval London.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The bronze uniforms commemorate the vital role of women during World War II.

Giant, friendly pelicans in Central London, the most unlikely of places.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The curios of pharmacist and collector Henry Wellcome.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

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

More than a million titles fill the labyrinthine shelves of this prestigious private library.

The building was originally a gas station built to resemble a Japanese tea house.

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.