Traditional 11th-century outdoor tannery.

Mosaics, storks, and brothels—this ancient city has it all.

The modern birthplace of Irish freedom.

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

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Enter the world under the hill at this ancient UK burial chamber.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

This Scottish burial tomb once held hundreds of ancient eagle bones.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

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

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The oldest continuously occupied public building in the United States.

This high desert botanical garden is a unique display of Northern New Mexico's geology.

Setting this massive marionette aflame rids Santa Fe of doom and gloom for another year.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Step inside Lucy, the world's largest "elephant."

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A daily replay of the experiment that proved the rotation of the Earth.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.