A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

A solemn reminder of the infamous World War II war crime that massacred almost all the men in a small Greek town.

A sharp sculpture made of thousands of pieces of jagged glass.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

Monasteries on rock pillars, once accessible only by frayed ropes.

An oasis of shade and color amidst the bustle of the old city.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The world's only museum devoted to the wonders of fluorescence.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Berlin's old airport.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Where once there was a train station bathroom, there is now this German burger joint.

Art and a pun, all in one.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

This classic restaurant features a gorgeous mirror-clad room.