North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

An art instillation for the sake of "raising vibrations."

A cannonball from Union forces battling John Hunt Morgan made this church a permanent home.

The crash of this great airship signaled the beginning of the end for dirigibles.

The spectacular collection of one of the world's best woodcarvers.

Step into the courtroom to learn details of the only case in history where ghostly testimony led to a murderer's conviction.

A 5,000-year-old city in Peru holds the remains of a stunning set of astronomically-aligned pyramids.

A Christian monastery stands on what was once a holy Incan temple.

Landmark dedicated to the plight of the American Indian in the 21st century.

Faces carved into the cliffs create an otherworldly walking trail.

This former factory has deep ties to rubber production in Akron.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

This Ottoman-era Greek Orthodox Church was built to honor Agia Pareskevi, a Christian saint.

The home of Greece’s national poet sits crumbling in the middle of a popular tourist district.

This building displays the scars of the “Dekemvriana,” a dark time in modern Greek history.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

When construction began on this hotel, developers were surprised to find the ruins of an ancient civilization.

Gladiators once walked this ancient, subterranean passage.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

These caves secretly held national treasures during World War II.

This graffitied 19th-century building was a prototype of European industrial architecture.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.