In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

A misnamed well, with a deep dark past.

The luxurious circular mansion built for a Communist leader now lies abandoned.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

The ruins of a medieval monastery built on a perilous slope.

The observation point offers spectacular views of the ruins of an ancient Armenian capital.

Giant stone letters dedicated to the founder of Armenia's alphabet.

The world's longest nonstop reversible cable car soars through spectacular scenery to the medieval Tatev Monastery.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

A pair of connected skyscrapers form this symbolic gateway.

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

A grand Yugoslav memorial to the group of partisans who fought and died resisting western Serbia’s Nazi occupation.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

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

A Serbian church lit by chandeliers made of weapons.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Structure built from the skulls of vanquished foes.

Space-age monument to an early 20th-century uprising.

Stone pillars and a petrified wedding party in the hills of North Macedonia.