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

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

Certain traditions prevail on the least-visited island of the Aran Islands.

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

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

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

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

A particularly disconcerting tribute to Irish martyrs.

Ancient Bronze Age rampart that was used into the middle ages.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Started as a kitchen garden, now the second largest botanical garden in the world.

A surreal museum of extraordinary industrial objects.

Cat art as far as the eye can see.

Museum preserving torture methods from the past.

The history and future of cannabis.

Founded as a refugee camp, now a popular tourist spot.