One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Murals of the wild parties once held on the frozen River Thames.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The first green space constructed on an elevated viaduct.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

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

Notorious artist squat renovated into legal studios.

A hidden tunnel of bones in one of Malta's oldest churches.

Banksy gives themself artistic license with this piece of London street art.

Legend has it this gnarled old tree was planted by Tsar Peter the Great during his visit to London.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Artists and musicians now rule over this former rail station.

English antique dealers with a taste for the unusual.

A mysterious artist-run cabinet of curiosities and library.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

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

An incarceration museum on the spot of possibly the oldest prison in England.

Hear the quietest sound from across the dome.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

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

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