A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

On the Oregon coast is a natural hole that seems to be draining the sea.

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

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

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

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.

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

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 modern birthplace of Irish freedom.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

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

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

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

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

The home of Ireland's last leprechauns is officially protected by the European Union.