The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Hans Christian Andersen for the postmodern world.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Two thirds of this Montreal neon icon has survived to flash another day.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A library of only unpublished manuscripts.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

The celebrity luchadores of La Paz are tough ladies in traditional petticoats and braids.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This quaint mortuary chapel hides a stunning Celtic Revival and Art Nouveau interior.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

You would never come across this tiny green oasis if you didn't know it existed.

Abandoned since 1998, this train station has become an oasis for urban explorers.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

Tintin's creator is celebrated in an immersive museum that's an astounding work of modern art.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

This collection of solar timekeepers includes the world's first digital sundial.