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

A retired military stronghold on the rolling green coast of Donegal.

An abandoned faux-pub made famous by a Guinness commercial.

Experience what life was like in Ireland during the Viking and medieval ages.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

Petrified footprints of one of the very first vertebrates to walk on land.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

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

A corkscrew-shaped barn in Ireland.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

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

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The ancient tomb acts as a calendar that keeps perfect time.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

What looks like a normal building is really a hollow facade hiding a subway vent.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.