Once the hottest nightclub in France, Amnesia now lies in ruins after a 2000 bombing.

Crushed coral and crystals give the sand its signature coloration.

Mysterious tombstones thought to be remnants of Atlantis.

Stalactites and stalagmites in a beautifully lit cave.

Ancient cave tombs known as the "houses of fairies."

This elaborate hole in the ground was built as a sacred site for an ancient civilization.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

This cliff-face port is considered a masterpiece of mining engineering.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

A wonderful collection of fossilized dinosaurs and other creatures that roamed the landscape millions of years ago.

The remains of an encyclopedic sculpture garden later used as an internment camp.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The gaunt visage of this angular Christ giant is enough to put the fear of God into all who see it.

This haunting location was featured in the final scene of a classic spaghetti western.

The deserted remains of a luxury hotel turned hospital ward.

An 11th-century medieval castle cascades over the town of Numão.

The 20th-century church looks like a rustic version of the Sagrada Familia.

This 47-story "M" needed 20 years to be completed

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

The discovery of these rare, ancient artifacts led to the creation of a new museum.

Dead weights honor the dead of Portugal's fishing industry.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

A 16th-century Andalusian palace.