Dozens of musicians have planted trees in this Danish park, and donated songs to go with them.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

A small Denmark town displays a pair of titanic jaw bones as their community symbol.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Perhaps the most spectacular grotto along the Algarve coastline.

Eat the ultimate iteration of Portugal's most beloved pastry.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A unique seaside cave where Aleister Crowley faked his own death.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

France's high-tech, future-themed amusement park.

Hundreds of hidden passageways weave through the old quarters of Lyon.

The world's first funicular powered by a steam engine.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

The famous winding walk at Chartres is surrounded in mystery and myth.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.