Walk down these stairs to get an underwater view of Switzerland's Lake Zug.

A massive observation tower that features gorgeous views and unique architecture.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

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

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

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

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

This small museum is an eccentric shrine to boyhood in the 1960s.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

New York City's only radical feminist independent bookstore.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This huge metal monument is slowly being stripped to its concrete skeleton.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

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

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.

A tongue-in-cheek arcade where the games are based on everyday life.

The broken skateboards that became a poignant memorial to a murdered skater.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.