Northern Ireland's Brobdingnagian stepping stones.

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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

This single room has survived the centuries with almost no deterioration.

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

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

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

This Neolithic passage tomb forms part of a World Heritage Site.

The ancient tomb acts as a calendar that keeps perfect time.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

A boulder so big and tough, they had to turn it into a landmark.

A hotel with a rich Wild West history of miners and bootleggers.

A quiet rock and botanical garden is the beautiful centerpiece of Fort Lewis College.

A riverside tiny house with books and other treasures galore.

This bee-themed family business does more with honey than anyone would think was possible.

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.