The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The silly symbol for an underground protest group is now scattered around the city.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

When the rain falls, this drain system turns into a musical instrument.

Berlin's old airport.

A fascinating insight into daily life in the Eastern Bloc.

An eerie, derelict amusement park in Berlin.

Bridge that died in war and was resurected.

What happens when you cross a mayor and a painter?

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

The oldest known university in the world is in Fez, Morocco.

The other side is actually green.

Traditional 11th-century outdoor tannery.

Founded as a refugee camp, now a popular tourist spot.

Farms are serving pizza made from their own fresh crops, a growing trend in the American Midwest.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.