Oriental bazaar in the heart of Sarajevo.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

The first mosque in the world to receive electricity.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

A monument on the pavement marks the spot where two cultures that shaped Sarajevo come together.

Bridge that died in war and was resurected.

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

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

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

What happens when you cross a mayor and a painter?

A museum dedicated to secret surveillance.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

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

A Stalinist prison camp for the wives and children of men accused of betraying the Soviet state is now a memorial museum.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

Tower with a double-helix spiral, adorned with letters of the Georgian alphabet.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.