This is the place where U2’s lead singer got his nickname.

The graffiti that birthed modern algebra.

A derelict hunting lodge that was once the site of aristocratic debauchery.

At the time of its construction, this hydroelectric power plant was the largest in the world.

This center tells the story of one of the most famous battles in Irish history.

One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

Collection of still-functioning printing presses from the 18th to 20th centuries.

This beautiful site is where the first transatlantic telegraph was sent from.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

An oddly conical beacon perched atop beautiful Irish cliffs.

A 1930s-style speakeasy with a secret doorway and one-of-a-kind cocktails.

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

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This Neolithic passage tomb forms part of a World Heritage Site.

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

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

This single room has survived the centuries with almost no deterioration.

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

This ancient Irish landscape boasts hundreds of legendary ruins.