The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

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

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

These caves secretly held national treasures during World War II.

Gladiators once walked this ancient, subterranean passage.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

1,500 Commonwealth servicemen of World War II are buried or commemorated in this cemetery.

This collection of artifacts represents one family's mission to record the horrors of World War II inflicted on their hometown.

This abandoned airplane hanger is said to have once been a top secret launch facility.

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

A tiny chapel and burial site lurk underground in Jajce.

A military fort has guarded the surrounding area from this key position since the 13th century.

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

A small museum built by a family that survived the Siege of Sarajevo.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

Carefully reconstructed after the Bosnian War, this 16th-century bridge stands as a symbol of the country's enduring multicultural heritage.

This unusual hostel provides a glimpse of life in a city under siege.

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

An abandoned brutalist monument whose history has been lost to the ages.

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

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

A forgotten and crumbling Yugoslav monument to the victims of fascism.