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

The modern birthplace of Irish freedom.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

Positioned outside a church, this sinister folkloric figure incited protests in both 1902 and 2002.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Six beautiful wooden giants are hidden around Copenhagen.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

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

The ruins of a monastery that dates to the 7th century.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A monument to a 19th-century Irish woman whose murder inspired several literary works.

A former smithy turned cultural hub with the capital's largest mural space.

A gated cross stands on the site where an Irish revolutionary met his end.

Inside Cork's Kent station stands its country's longest-serving postbox.

On the clock tower at St. Anne's Church in Cork, you never know which face is telling the truth.

The only surviving piece of Copenhagen's 16th-century defensive wall.

An unconventional and naturalistic sculpture depicting the artist marking his territory on an exterior faculty wall.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

This unique architectural wonder is home to luxury apartments.

The final resting place of one of the brightest physicists of the 20th century.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

This risqué sculpture, based on a Hans Christian Andersen fairy tale, caused outrage 35 years after it was erected.

See what remains of a once grand ancient Roman circus.