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

Horse cemetery on the grounds of Blarney Castle.

Originally built to monitor fishing, this Victorian tower now educates visitors about the local salmon industry.

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

A hugely vast Irish landscape of barren rock that stretches for miles.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

A monument to a beloved aquatic folk hero in the Irish town of Dingle.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

The oldest public library in Ireland.

This supermarket offers shoppers a window into the past alongside their groceries.

A monument to the man who almost killed Hitler.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Metro station with a claim to rock n' roll fame.

Ever-changing museum dedicated to graffiti and contemporary street art.

David Robert Jones was a Berliner — from 1976–1978

Dine at a legendary after-hours joint frequented by David Bowie and Iggy Pop.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A thin golden line commemorates the deadliest terrorist attack in recent German history.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.