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.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A fascinating insight into daily life in the Eastern Bloc.

Where once there was a train station bathroom, there is now this German burger joint.

Art and a pun, all in one.

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

A surreal museum of extraordinary industrial objects.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Positioned outside a church, this sinister folkloric figure incited protests in both 1902 and 2002.

A former smithy turned cultural hub with the capital's largest mural space.

An unconventional and naturalistic sculpture depicting the artist marking his territory on an exterior faculty wall.

This contemplative sculpture made out of old machine parts is meant to be the first in a series of sculptures around the world.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

The only surviving piece of Copenhagen's 16th-century defensive wall.

This ordinary street was made infamous by a legendary visit from the devil.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Hans Christian Andersen for the postmodern world.