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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

One of the first hotel rooms in a pod.

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

Legend holds eating just one of these black eggs can add seven years to one's life.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The best place in the world to buy tinned fish.

One of the smallest bookstores on the planet.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.