A century-old shot ball factory tower is open to the public once a year.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

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

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

One of downtown Berlin's last reminders of its Communist past.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

One of the world's heaviest musical instruments towers within a popular urban park.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

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

The maritime museum that boasts the largest nautical library in the western hemisphere.

Nuclear reactor created the plutonium used on Nagasaki.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

An obscure waterfall that looks like something out of a fantasy novel.

This former coal gasification plant found a curious second life as a popular public park.

Cold war icon and onetime "hole" in the iron curtain.

Tiny memorials honor individual victims of the Holocaust.

Metro station with a claim to rock n' roll fame.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.