This Copper beech tree nestled on a nature reserve is host to a bevy of autographs from Irish literary icons.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

A stone wall that mysteriously moved three feet from its foundation.

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

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

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

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

The skeleton of a whale that beached itself in this Irish town is now on display in their public park.

Just a few miles off the western coast of Ireland lies an isle steeped in Irish literary history.

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

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

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

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

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

A monument to the grand synagogue that stood in this space before Nazis burned it down.

This enigmatic artifact remained buried in a churchyard for years.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

A relic of the old jail still stands in its original location.

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

Ancient man-made caves underneath small town Belgium.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.