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

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

Modern sundial uses ancient methods to tell time and date perfectly.

An encyclopedic collection of mammal penises.

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

This stunning concert hall has become a symbol of Iceland's national recovery.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This strangely specific landmark will let travelers know when they are half way there.

A celebration of one of the West End’s most recognizable figures, who made helping others his life's work.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This super steep hike ascends 2,000 feet in less than a mile.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

World's second largest particle accelerator, where nature reveals its secrets.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

The palatial McDonald's that inspired Wesley Willis.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

The 606 is a decade in the making.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

One Confederate statue that accurately reflects the ugliness of its subject.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.