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

This historic oak tree has been around for over 300 years and might last for 300 more so long as it doesn't fall apart first.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

A terrific purveyor of natural history objects and curios.

The world's largest set of the ten commandments lay nestled in the heart of the Great Smoky Mountains.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

Tiny memorials honor individual victims of the Holocaust.

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

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

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

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

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

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

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

Art and a pun, all in one.

A collection of abandoned typographic signs from Berlin and beyond.

The most visited, and possibly most controversial, museum in Germany.

Berlin's old airport.

A brush maker used his factory to protect blind Jews from the Gestapo.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This angular brutalist playground turns playtime into modern art time.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.