On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

One of the best examples of a Byzantine period monument in Albania.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

A memorial to the atrocities of the People's Socialist Republic of Albania.

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

A museum dedicated to secret surveillance.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

A NATO bombing took the lives of 16 civilians in 1999—the ruins remain in the center of Belgrade.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

This spa park features an open-air museum of abstract marble sculptures.

The interior of this Serbian royal family's mausoleum is covered with exquisite mosaics.

Popular river that runs through the remote Serbian municipality of Leskovac.

Operating continuously since 1903, this "milestone" facility transformed the regional economy.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

Sealing couples' love since just after World War I.

This beautiful medieval Serbian monastery is home to frescoes, peculiar sculptures, and historical curiosities.

A sculpture of graceful storks sits atop this fountain in Independence Square.

A striking symbol of the Bulgarian capital.

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

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.