The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

What was once believed to be a church floor turned out to be the artwork of geology.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

These enlarged egg sculptures represent the native birds of eastern Iceland.

This black church sits alone among a field of lava rock.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

One of Ireland's best-preserved chambered cairns can be found next to a wishing tree.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

Everything in this two-story house—down to the mounted deer head on the wall—was carefully crafted from concrete.

A mysterious spot where the laws of gravity seem not to apply.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

The unique design of this former quarry provides ideal acoustics for concerts.

The second oldest anatomical theater is housed in a museum of curiosities.

The second-largest collection of runic calendar staffs in Sweden.

This shack nestled in a 120-acre forest of maple trees in Mont-Rigaud is a wonderland of sugary syrup.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Enter the world under the hill at this ancient UK burial chamber.

Possibly the oldest of Britain's ancient henges is also one of its most stark.