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

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

A preserved college lock-up that recalls a clubhouse approach to discipline.

This inconspicuous pharmacy went down in history as the first gas station in the world after fueling the first road trip ever taken.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

The world's most charming instant portrait studio also happens to be its smallest.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.