Preserved behind glass, the ruins of a medieval building used to store human remains.

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

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

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

It celebrates a very stinky task and salutes London's fatberg-vanquishing team.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

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

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The largest of London's subterranean rivers and once a mad, bad center of London life.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A mineral spring that became all the rage in 17th-century England.

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

This coffee shop lies hidden beneath a historic church.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

A building that survived WWII, possibly on the virtue of its name alone.

The largest clown school in Britain offering accredited degrees.

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

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

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

The cedar tree in Highgate Cemetery earned its title by accident.

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

This historic building displays the remains of a victim of the devastating 14th-century plague.