A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

A retrofuturistic art installation in the Pittsburgh Airport.

A former plague hospital turned medical museum.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

This unusual elevator doesn’t stop or slow down.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

A unique collection of gilded age mechanical pianos.

This subterranean studio is filled with fascinating kinetic art.

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

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.