This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This statue of a 15th-century Hungarian military and political figure has become known for its resemblance to a particular cartoon knight.

This beautiful medieval Serbian monastery is home to frescoes, peculiar sculptures, and historical curiosities.

Stone age urban planning.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

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

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

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.

Mummies preserved naturally for seven centuries.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

Ancient Greek oracle of the dead.