A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

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

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

An art-filled botanical garden and former dyeworks hiding in plain sight.

Rubbing the buttons along this statue's coat is considered good luck.

Estimated at over 1,000 years old, one of Malta's oldest trees serves as a living link to its ancient past.

The bones of prehistoric animals and early signs of human habitation have been found inside Malta's "cave of darkness."

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Rare karst landscape eroded from a flat seabed.

These megalithic tombs contain some of the largest stones ever moved in prehistory.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Single runway interrupted by a busy road that cuts across its middle.

This disused church, left to the elements of the Arctic Circle's forests is open for exploration.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

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

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.