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.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

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

This monumental work of art symbolizes the coming together of a previously divided city.

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

Berlin's old airport.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.