Vines grow up the metal bars in this public park created from an old machine factory.

A 22-million-year-old sandstone cave is a natural habitat for award-winning cheese.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

This eclectic architectural gem played witness to Zurich’s colonial past.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

A historic observatory precariously perched at the "Top of Europe."

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

These spooky and unusual stone formations create an underworldly landscape.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

1513 Turkish world map, full of European state secrets and snarky commentary.

Turkish adventurer antiques in the heart of the Grand Bazaar.

A marvel of Byzantine engineering under the streets of Istanbul.

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

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

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Floating pink tap installed for a flower show in London.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.