A labyrinthine underworld of tunnels and caverns hides beneath the city.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A group of committed locals restored this centuries-old windmill to its original condition.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

Nearly 2 billion seeds from 38,000 species are stored and processed at this visitable facility in a quiet corner of England.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

The history of West London’s water supply.

This sanitized yet surreal depiction of a Greek fertility god looks over a square in one of central London’s residential areas.

Stone carvings celebrate the legacy of a now-defunct theatre.

This statue includes the molehill that toppled a king.

Crafted by one of the first makers of stoneware in England.

A roadside shrine to a late rock god only remains thanks to the unyielding efforts of his fans.

This unusually-named reservoir found a second life as a nature preserve.

Eclectic final resting place of the controversial explorer.

This small, round building is the entrance to a bomb shelter built in anticipation of World War II.

This site was once home to Henry VIII and Elizabeth I.

Thrilling and delicious complement to any dining experience.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

A mysterious concrete hand reaches out from between the stones of Uniwersytecki bridge.

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

A collection of old neon signs from all over Poland line a secluded courtyard.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

This ex-prison dates back to the Middle Ages.