An eerie, derelict amusement park in Berlin.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

A magical, if a bit tacky, 1960s castle conjures up medieval fairytales and Greek mythology.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

Berlin's old airport.

A fascinating insight into daily life in the Eastern Bloc.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This bridge was constructed from the rubble of the infamous Bastille.

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This old wooden funicular railway leads to a cemetery in the forest.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

There has been an astronomical clock on this spot since the 14th century.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

The Bristol Camera Obscura housed in an ancient windmill.