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

A museum dedicated to the former country.

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.

The unusual sculptures are believed to be powerful political symbols.

One of Belgrade's most beloved animals.

A Serbian church lit by chandeliers made of weapons.

A misnamed well, with a deep dark past.

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

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A pair of connected skyscrapers form this symbolic gateway.

These desert alfalfa farms redefine the meaning of crop circles.

A network of tunnels runs underneath the buildings of this ancient village.

Once a major stop on the Hejaz Railway, this desert station (complete with steam locomotive) has been abandoned for decades.

A phenomenon that appears to make gravity work in reverse has been attributed to jinn, supernatural spirits from Arabian folklore.

This tower has survived the times despite being composed of mud and camel hair.

Village of slate houses, built on a white marble outcrop.

This giant volcanic crater holds its very own field of salt.

In the middle of a barren desert, a massive, solitary rocky thumb juts out.

This museum documents the ancient practice of salt production in Figueira da Foz.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

This mesmerizing, colorful structure looks like a tent made from stained glass.