A tiny church on a man-made island in the Adriatic.

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

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

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

A Roman monument to their own civil engineering prowess.

Sealing couples' love since just after World War I.

Moss and stone turn this waterfall into an otherworldly liquid veil.

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

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

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

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

A Serbian church lit by chandeliers made of weapons.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A misnamed well, with a deep dark past.

A pair of connected skyscrapers form this symbolic gateway.

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

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