The bones of prehistoric animals and early signs of human habitation have been found inside Malta's "cave of darkness."

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

This church is named for one of the most dramatic tales in the early Christian church.

Ancient mysterious ruts carved in the bedrock.

These temples are among the oldest free-standing stone buildings in the world.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This subterranean necropolis holds three floors of antler-dug grave caves.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This demon atop the Notre-Dame de Paris looks utterly bored.

The famous winding walk at Chartres is surrounded in mystery and myth.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

This enchanting mountain plateau celebrates spooky local folklore.

Site of one of World War I's most horrific scenes.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.