This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This one-room museum is dedicated to Norwegian history and jokes.

The world's northernmost ice hotel.

World's strongest whirlpool.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

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

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

This strange statue features a bust of the famous composer plopped atop a woman's body.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

Dine amidst exotic plants at this former royal greenhouse.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Museum devoted to the artificial language of Esperanto.

American soldiers discovered Europe's best one-liner at the end of World War II.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

A spherical "micro-nation" in the heart of Vienna.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Where beer lovers can literally immerse themselves in beer.

Handsomely crafted representations of our round planet.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.