Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

Natural rock formation, or biblical artifact that saved Earth's wildlife two by two?

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Celebrated as a center of civilization, the remains of the ancient city have been nearly destroyed by greed, egoism, and war.

A Turkish monastery tucked into a cliff wall.

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

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The remains of a ruined mansion memorialize the 1906 earthquake.

Roman ruins top white travertine terraces formed by ancient hot springs.

Roman ruins, natural methane fires and a lovely beach.

Submerged ruins of a Neolithic coastal settlement, where houses, wells, graves and skeletons have been unearthed.

A reproduction of earth's many biomes.

This once luxurious Catskills resort is now a haunting ruin.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

A crumbling hospital from the 1850s on Roosevelt Island.

A once great mansion stands in stately ruin.

The remains of Crystal Palace Great Exhibition of 1851.

The palace of the King of Kings, burned by Alexander the Great.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Remnants of a Victorian garden feature sitting in public woodland.

These picturesque ruins crumble beautifully into the ocean.