This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

Located close to a movie studio lot, this restaurant has a long history of star-studded patronage.

A surprising number of shipwrecks visible just off the Somaliland coast.

The sullen remains of vessels abandoned in the Port Adelaide River.

The remains of the concrete ship can be seen during low tide.

Along a coast that sees the annual migration of humpback whales, a geological formation that takes the shape of a whale’s tail.

On a secluded beach is one of the few shipwrecks left on the shores of Mauritania.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

A serene desert oasis speckled with ancient artifacts.

The depictions of slaughter are surprisingly detailed at this mysterious ancient site.

Sleepy fishing port not included on many maps.

In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

Rocky Atlantic beach home to a stunning stone arch.

Endless rows of boxes of paper records line the hallways of the archaic federal facility where guns are traced.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

A monument marks the location of the first successful steamboat demonstration.

A chemical factory damaged by two earthquakes and an explosion that became abandoned after bankruptcy.

An enormous factory from the late 1800s sits abandoned on Cleveland eastside.

A Roman monument to their own civil engineering prowess.

Moss and stone turn this waterfall into an otherworldly liquid veil.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

A wealthy aristocratic family built this Disney-worthy, fairy-tale castle.

A former hospital is now home to a pizza parlor and maybe a few ghosts.