This fresco inside a Serbian cave church has been a source of disagreement.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Flames have been burning within this mountain for more than 2,500 years.

Enormous ants wielding giant pine needles guard a Stockholm real estate company's office.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

A trio of giant megalithic stones in the middle of a golf course.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

Swirling layers of white and red rock earned these mountains their festive nickname.

A Viking man's tribute to his brother stands in Gävle's oldest church.

The world's largest "Christmas tree" is illuminated by hundreds of lights stretching 2,000 feet up the slope of Mount Ingino.

Remnants of the Nazis' occupation of Denmark linger along the sand.

This giant sculpture is both loved and disliked by the local community.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

A man throwing a giant severed hand towers over Antwerp’s main square.

The best-preserved ancient theater in the world.

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

This hill is known for its connection to the occult in Slavic tradition.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

This generously endowed statue once stood guard outside a Roman home.

After this medieval Serbian fresco was hidden for centuries, an image of it became one of the first to be sent into space.