Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This elderly couple's hand-picked collection of rare gems is one of the finest in all of Iceland.

This replica Viking village was created for a film that was never shot and is now open to visitors.

Inside this museum, visitors venture through ghost stories entrenched in Icelandic folklore.

Medicinal spa created with the discharge from a geothermal energy plant.

Pilgrimage site for star-crossed lovers.

A gorgeous example of 13th-century Gothic architecture.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

Drink wine handed out through a window as part of an age-old tradition.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

One of the most important yet well-hidden museums dedicated to the history of medicine.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

A forgotten "city of water" underneath the famous Trevi district.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

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

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Pompeii's less famous neighbor is still revealing her secrets.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.