The only ancient site that remains on the south bank of the sacred Ilissos river.

Elaborate stone houses constructed from the ruins of war.

An ancient fortification lives on in this Chinese city.

Home to over 200,000 artifacts, this museum attempts to guide visitors through the ancient history of Beijing and Imperial China.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

This restaurant proudly displays bread signed by the 39th president.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

This Indiana walk of fame honors music legends with record-shaped plaques in the pavement.

This unassuming home was once “grand central station” for the Underground Railroad.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

One of the first schools in the U.S. to admit students without regard to race or gender.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

A headstone tells the sad story of a lost little boy and his pet dog.

A miniature world of concrete and stone in Springfield, Ohio.

This famous city eluded concrete detection until the early 2000's.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

These winged Maya figures are the subject of speculation and conspiracies.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.

One of the most well-preserved temples of ancient Egypt.

Ancient Egyptian relief, claimed to depict an electrical light.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.