At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

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

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A carved grave marker from the 2nd century is mounted in the alcove wall of this Bavarian church.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

This riverside restaurant has been serving customers since 1146.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This German bone house contains the remains of some 20,000 souls.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

A striking 12th-century-style castle built on the edge of a cliff.

Started as a kitchen garden, now the second largest botanical garden in the world.

The fairy tale castle of the "fairy-tale king."

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

A medieval military street hidden beneath a charming French fishing village.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

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

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