A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Final palace complex of the last of 29 Kokand rulers.

Light still pours into the ruins of this ancient Islamic observatory.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

With over 10,000 lights, this engineering marvel lights up the city after dark.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

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

Ming Dynasty necropolis raided during the Cultural Revolution.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A decaying, yet still functioning, work of communist architecture.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

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

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.