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

After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

Obelisks and stone pineapples in the Irish countryside.

An unusual manor of stunning beauty, born out of a crippling disease.

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

Local legend says the remains of Father Christmas lie within the medieval grounds.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

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

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

This 14th century tower house was once the home of Irish poet W.B. Yeats.

A remarkably intact castle that once was the largest in Ireland.

Research station devoted to mysterious floating lights seen in a Norwegian valley.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

A stunning silver lining to global warming's gloomy cloud.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

One of the most accessible undersea plane wrecks in the world.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

Walk behind a 50-meter-high waterfall.

The last fully functional fortress of Germany's World War II Atlantikwall.