The ridged layers that make up this river canyon represent Earth's geological history.

Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.

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

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

This fresco-covered medieval monastery hangs from the side of a steep cliff.

A well preserved medieval fortress in Vojvodina.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

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

This mesmerizing medieval monastery-cave complex sits thousands of feet above ground overlooking a valley.

Tucked in an urban forest, this restaurant specializes in homemade, healing rakijas.

The ruins of this medieval castle on a foggy hill tell the story of a once-mighty empire.

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

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

A pair of connected skyscrapers form this symbolic gateway.

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

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

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

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

Structure built from the skulls of vanquished foes.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

A 16th-century mosque rebuilt after wartime devastation.

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

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