Sacred Indian temple that’s all monkey business.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

A small town hallucinates en masse - Bad bread, or CIA science project?

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

Super-heavy Nazi architectural experiment.

A modern sliver of architecture in Roma.

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

This Denmark theme park is part family attraction, part experimental archaeology project.

20-foot tall lamp mumbles Swedish to celebrate the holidays.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Billionaire's mark on the earth.

Feed it cash, get your very own gold bar.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Architectural monsters are devouring this palace's every door and window.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This rough experimental house was created by flooding a dirt hill with concrete.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.