A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

A historical puzzle lies at the origins of this structure.

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

A 14th-century Serbian Orthodox church that was once converted into a mosque under the much-disfavored Ottoman Empire.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Controversial site of what could be Europe's first pyramid.

Some of the best-preserved specimens of the monumental medieval tombstones found throughout Bosnia and Herzegovina.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A tribute to a man who defied the Nazis until his last breath.

A museum dedicated to the former country.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

For more than half a millennia, this automaton has rung an hourly bell.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

This enormous censer uses a pulley system installed over 400 years ago.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

The site of the last royal wedding in Korea.

Its humdrum facade only adds to its electrifying appeal: a rooftop with panoramic views of a shapeshifting metropolis.

This pagoda was once the central feature of a Buddhist temple that no longer exists.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

Established hundreds of years ago, Gandan remains the premier Buddhist monastery in Ulaanbaatar.

Enormous statue of the Emperor of the Mongols.