This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This ancient statue of Dionysus lies unfinished and abandoned in one of Greece's oldest quarries.

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

This striking sculpture of Icarus honors Greece's fallen flyers.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

The ruined doorway is a portal to the building's turbulent and torturous past.

The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

One of downtown Berlin's last reminders of its Communist past.

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

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

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.