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

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

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

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

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The Renaissance-era courthouse is a relic from the fortified town's centuries of Venetian rule.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This brutalist monument is inscribed with 9921 names of Yugoslav partisans who perished during WWII.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

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

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

Oriental bazaar in the heart of Sarajevo.

Bridge that died in war and was resurected.

This strange statue features a bust of the famous composer plopped atop a woman's body.

The Habsburgs' royal collections of art and wonders.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A pair of connected skyscrapers form this symbolic gateway.