Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

An ancient knight and a symbol of the city's freedom.

Gargoyle head that brings good luck.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This automated sculpture of two men peeing will spell out text messages with their micturition.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

The anatomical-pathological collection of a man who changed surgery.

The Tudor-style cottage in the middle of the square is not quite what it seems.

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

A recently restored Shoreditch landmark with ties to Jack the Ripper.

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

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

Taxidermied animals galore, by appointment only.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

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

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

The remains of the great moral philosopher reside in a university in London.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.