This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

This network of narrow, medieval passages has the most delightful name.

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

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

Home to three historic ships from the age of Vikings.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The world's northernmost aquarium looks like it has fallen over.

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

The rusted hull of a WWII German destroyer pokes above the surface in a Norwegian fjord.

One of the shortest streets in York has an especially odd name.

Follow the original medieval paths that wind through this intriguing section of the city.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A misnamed well, with a deep dark past.

Museum dedicated to the terror regimes of Hungary.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.