These 5,000-year-old cave paintings provide a glimpse into prehistoric Finnish life.

This museum is dedicated solely to this millennia-old handheld cooling device.

This castle was once considered as an option for the Royal Family's alternate residence, but you may know it better from the 'X-Men' movie.

All that is left of this medieval castle is two towers, both of which now display a visible tilt.

This 2,000-year-old stone maze is one of the oldest in the country, but its purpose is still a mystery.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

The hilltop town of Segni was once home to an ancient Roman colony and garrison.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Light still pours into the ruins of this ancient Islamic observatory.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The Avenue of Mausolea is a series of grand palatial tombs.

A former Roman town that was once the home of Scipio Africanus.

For lovers of Soviet cinema, this museum is home to a vast collection of artifacts and costumes.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

A dark Victorian well house now plays host to mystical waters and pagan shrines.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

This patch of land is home to Sweden's largest burial mound, allegedly belonging to a mythical king.

This mysterious ancient arch is hidden in the forest of Simbruini Mountains Regional Park.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.