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

China's mysterious record-setting sleeping Buddha.

A medieval military street hidden beneath a charming French fishing village.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

This WWII aircraft museum presents its wrecks like taxidermy, complete with recreations of the crash sites.

One of England's most famous churches hides a pair of little known architectural treasures.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

A collection of objects supposedly singed by the hands of souls in purgatory.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

2300-year-old Roman road connecting the empire.

Jesus' footprints and the first catacombs in the world.

Bright, rebellious indigenous murals dating back to the Spanish Conquest inexplicably cover the walls of this Catholic church.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.