The first park built over a freeway is a brutalist masterwork.

Dioramas and animatronics lead you through the story of Bhagavad-gita, the Indian literary classic.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

An urban laboratory.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A fascinating insight into daily life in the Eastern Bloc.

A surreal museum of extraordinary industrial objects.

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

A slice of central Asia in the middle of Berlin.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A collection of abandoned typographic signs from Berlin and beyond.

Miniature art that tells an enormous story.

What is the Thing?

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

A church of bones, decorated with 40,000 human skeletons.

Berlin's old airport.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A Jenga-style cylindrical tower of books that appears to go on forever.

A crumbling hospital from the 1850s on Roosevelt Island.