The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

How did a French journalist’s grave become the sexiest statue in the cemetery?

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An Antoni Gaudí masterpiece in Astorga.

This castle has links to Portugal’s founding and struggles for independence.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

A replica of the Roman emperor in glorious full color.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

The world's largest reflecting pool is just two centimeters deep.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This Parisian gem is one of the most incredible ethnographic museums in the world.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Fantastic views and thousands of love locks.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

Below the altar in Saint-Willibrord Basilica rests the mortal remains of Luxembourg's patron saint.