This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Tiny memorials honor individual victims of the Holocaust.

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

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

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

A fascinating insight into daily life in the Eastern Bloc.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

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

Go surfing on this urban wave, "hacked" by local surfers.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

The footprint of a frustrated devil in Munich's Cathedral.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The profile of one ill-fated deacon was emblazoned forever on this church window during the Halifax explosion.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Two thousand artifacts from around the world collected by one woman who loved to travel.