This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

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

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

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

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

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

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

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Thousands of turbines whir at at the origin of North American wind power.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The yawning maw of this pagan visage is said to bite off the hands of liars.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

An ancient knight and a symbol of the city's freedom.

Gargoyle head that brings good luck.

A spiritual vortex among the red rocks in Sedona.