A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A spectacular cave and a beguiling lake.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

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

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

A stunning Victorian abbey and walled garden on a lakefront.

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

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

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

This ancient Irish landscape boasts hundreds of legendary ruins.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

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

Petrified footprints of one of the very first vertebrates to walk on land.

Experience what life was like in Ireland during the Viking and medieval ages.

The largest portal tomb in Europe has a capstone weighing around 150 tons.

Ancient Bronze Age rampart that was used into the middle ages.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.