The oldest still-operating tavern in the United States was once owned by a pirate.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

The historic home still shows the scars from a little run-in with the British in 1813.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

An old slaughterhouse now holds the largest collection of pig artifacts.

The fairy tale castle of the "fairy-tale king."

The taxidermy remains of the first brown bear to enter Germany in 170 years.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

The prototype for all Nazi concentration camps.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .