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

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

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

A particularly disconcerting tribute to Irish martyrs.

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

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

The modern birthplace of Irish freedom.

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

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

The ruins of a medieval monastery named after a type of tree.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

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

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

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

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

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

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

An office built to look like a giant basket.

The childhood home of the Wright Brothers in Dayton.

The walls of the statehouse tell the story of Ohio’s prehistoric past.

A dazzling display of lights and crystals.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

Built around 1845, this house was occupied for 100 years, serving as a home to a prosecuting attorney, a Union Civil War general, and a wealthy socialite.

The mounds at this site were reconstructed with the help of archaeologists and historians.