A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Rebuilt remains of a temple to Roman god Mithras.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The last four extravagant street signs of London's historic banking street.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

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

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

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A historic house left in "dramatic still life."

An unassuming London park is actually a pilgrimage site for modern clowns.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

Artists and musicians now rule over this former rail station.

Two plaques commemorate the site of Shakespeare's first theatre.

Historic church where a number of Shakespeare's actors are buried.

The largest clown school in Britain offering accredited degrees.

This lush area was the site of extensive enemy bombing during WWII.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

A museum wholly devoted to juvenescence.