Macabre astrological automaton clock dating to the late 1400s.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

This handsomely carved wooden church is more than 800 years old.

A statue of the heroic plumber stands outside a company that bluffed its way into being Nintendo's Scandinavian distributor.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

The shiny silver little brother to Copenhagen's Little Mermaid statue.

Old Danish castle immortalized in Shakespeare's Hamlet.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

A museum marks and documents the site of the Titanic's launch.

These engineering masterpieces are a dominant feature of the Belfast skyline.

The father of Belfast medicine is buried in the graveyard of this 13th-century church, which now lies in ruins.

Northern Ireland's Brobdingnagian stepping stones.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

A stunning Victorian abbey and walled garden on a lakefront.

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

A bizarre roadside attraction and the first instance of miniature golf in the world.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This historic train station has been converted to a locomotive themed hotel.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.