This "volcanic all-day restaurant" is right on the beach.

The ruins of this ancient fortification wall sit in the middle of a quiet, residential intersection.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

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

Once an early Christian burial site, it's believed the location was home to around 200 gravestones.

Horse cemetery on the grounds of Blarney Castle.

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

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

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

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

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

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Where commuters walk through remnants of an ancient Greek necropolis.

One man's unrequited love stands in a glass box forever.

An abandoned factory along the Mississippi coated by a giant mural.