Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Historic medieval fortified city in southwest France.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

The world's first electric battery-powered submarine.

A contemporary art installation housed within a Gothic cathedral.

This historic electric train has operated with regularity since the early 1900s.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This Gothic church houses ornate royal tombs and a magnificent gilded altarpiece.

This beautiful spit of land was once the summer playground of the king of Spain.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Giant topiary dog once played a role in a terrorist bomb plot.

Marvel at this immense work of art that greets arrivals to the city.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

The oldest operating roller coaster of its kind, the Montaña Suiza has been thrilling riders since 1928.

A beautiful modern church dedicated to the teleporting patron saint of Andorra.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

You can still walk across this beautiful medieval bridge in Andorra.

Living towers made of people that are now recognized by UNESCO.

Stunning Roman aqueduct used for 1900 years and still standing.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

This amazing piece of modern art honors the hundreds of fishermen killed during Cambrils' "year of misfortunes."