A modernist landscape of water and sci-fi concrete.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

A fifth-century temple improbably built into the side of a cliff.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

The longest hedge maze in the world.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Tubing through a cave lit with glowworms is a magical underground experience.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A slice of central Asia in the middle of Berlin.

Paris' linguistic guide to the international language of, yes, love.

Centuries-old bridges grown from tangled roots.

Explore 10 acres of environmental sculptures.

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

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

Walk 2,300 feet above the ground on the "Troll's Tongue."

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Stalactites and stalagmites in a beautifully lit cave.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.