This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

An ethereal glowing blue ocean cave in Croatia.

A musical instrument played by the sea.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

The ritual has been performed uninterrupted for nearly 700 years.

A decommissioned tube carriage within a London museum hosts a regular pop-up supper club.

A domino effect created with Britain’s iconic telephone boxes.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This coffee shop lies hidden beneath a historic church.

A kaleidoscopic warehouse-maze of handmade neon signs.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

Monsters and miniatures are held in equal esteem at this wondrous museum.

An icy lake tucked among jaw-dropping alpine panoramas.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

One of the greatest maze designer’s greatest mazes.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Dive for drinks at Croatia's first and only underwater winery.

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.