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

An unusual manor of stunning beauty, born out of a crippling disease.

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

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Less a museum than a bizarre fantasy world created by artists and engineers.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

Nordic giants resurrected from the sea and restored to their former greatness.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Old Danish castle immortalized in Shakespeare's Hamlet.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

2300-year-old Roman road connecting the empire.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."