Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

A 16th-century Andalusian palace.

An archeological treasure trove stumbled upon by a couple of children.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

Even Henry David Thoreau found this glacial pothole irresistible.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Museum dedicated to the terror regimes of Hungary.

A pagan tradition of draping trees with rags eerily lives on.

One of Ireland's most infamous prisons for rebels including men, women and children.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Once the path of a railway tunnel, now home to thousands of glowing insects.

A submerged village appears when dam levels drop.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

This giant boulder is pinched over a 1000-meter abyss by two mountains.