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

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

The burial place of 14 of the executed leaders of the Easter Rising.

One of Ireland's most infamous prisons for rebels including men, women and children.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

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

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The largest stone circle in Ireland.

At this cozy bar tucked down a hidden Galway backroad, Guinness makes the Gaelic come out.

A moody and picturesque riverside ruin overgrown with vegetation.

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

Wander among the abandoned ruins of this once-powerful medieval town.

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

The symbolic center of Ireland, this summit also offers panoramic views of the countryside.

An ancient neolithic tomb that only sees the sun twice a year.

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

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

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

Now in ruins, this abbey was the home of Tironensian monks for more than 400 years.

The cedar tree in Highgate Cemetery earned its title by accident.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Climb to the top of this windmill for a scenic panorama and up-close look at wind energy production.

A well-preserved 2nd century fort where moles are the archaeologists.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.