A model solar system adds a celestial touch to this suburban park.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A lush indoor jungle fills this bustling Madrid transportation hub.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A slice of central Asia in the middle of Berlin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A wunderkammer of mysterious objects and stories.

A surreal museum of extraordinary industrial objects.

An abandoned swimming pool decays on the outskirts of Berlin.

A museum dedicated to a Cold War era sausage.

An old department store turned Nazi prison turned artist commune.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

This classic restaurant features a gorgeous mirror-clad room.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A plaque on the side of a building is a small tribute to the woman who invented an iconic Berlin fast food.

Taste freshly foraged yarrow and black locust blossoms at this ambitious cocktail bar.

A restaurant and observation deck built in a unique broadcasting antenna.

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.