These picturesque ruins crumble beautifully into the ocean.

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This crumbling Portuguese ruin overlooks the populace it once ruled.

These haunting ruins belong to an ancient village that once had one hell of a view.

After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

This chest hospital with a dark, haunted past serves as a fitting set for horror films and a paradise for ghost hunters.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

Ancient Bronze Age rampart that was used into the middle ages.

Pompeii's less famous neighbor is still revealing her secrets.

Ruins of a 10th century church tucked away deep in a botanical garden.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

A decommissioned submarine base makes a great space for graffiti art.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”