The world’s largest underground marble quarry is hiding in Vermont.

The mosaic floor of a 4th-century synagogue features a pagan zodiac wheel alongside traditional images of a Torah ark and menorahs.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

Three floors above a 2,000-year-old royal tomb is a rare collection of ancient porcelain pillows.

One home in the historic strip hides secret compartments and the ghostly songs of long-gone canaries.

Long before air conditioning, Persian architects found an ingenious way to cool off.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

Buying your medicine at this particular pharmacy is like taking a trip back in time.

This tiny old water tower once doubled as a makeshift jail.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

The old fire tower is one of the last of its kind in the United States.

The gravestones in this lost burial ground were bulldozed and replaced with houses and a dog park.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

Hundreds of toothbrushes hang from a wire fence along a quiet New Zealand road.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Located within a historic park, the beacon is the oldest standing structure in Miami.

These abandoned ruins in the middle of Jaffna have withstood centuries of tumultuous power struggles.

One man spent 10 years building a spectacular section of road because no one else would.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

An unknown number of cholera victims are buried in two nondescript graves.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

The shortest river in America flows for just 201 feet.