England's oldest surviving hedge maze has been confusing visitors for over 300 years.

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

An unusual round church in London with a Templar past.

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

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

A cluttered and astounding collection of antiquities and curiosities.

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

Eighty million natural history specimens call this gargantuan museum home.

Taxidermied animals galore, by appointment only.

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

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

Paris' linguistic guide to the international language of, yes, love.

This bridge was constructed from the rubble of the infamous Bastille.

France's most famous cemetery, with some of its most curious tombs.

The celebrated eyesore created by starry-eyed sweethearts.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

A beautiful and classically designed villa, with an hourly infestation of monsters.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.