This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Da Vinci's equestrian statue, 500 years in the making.

A map made up of 32 different materials, representing Ireland's 32 counties.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

A hugely vast Irish landscape of barren rock that stretches for miles.

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

A stunning Victorian abbey and walled garden on a lakefront.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

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

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

A tiny village church in dramatic surroundings.

A tribute to the successful role of the Keflavik Naval Air Station in the defense of Iceland, United States and NATO Alliance.

This earthwork installation sits on a grassy hill, celebrating Iceland's past and present.

A real-life homage to the Rachel McAdams and Will Ferrell's fictional Eurovision musical duo.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This five-foot-tall bronze bird is a memorial to a species that was hunted out of existence.

Pick up this rock and become an instant legend.

What was once believed to be a church floor turned out to be the artwork of geology.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."