This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

One of the last doorless, continuously moving elevators still in use in the U.K.

A place of meditation and prayer, the grotto is a replica of the one in Lourdes, built in gratitude for the healing of a seminary priest. This is the first pilgrimage to take place on August 15 north of the Seine.

This disused boat elevator was saved from the scrap heap so that visitors could tour its rusting skeleton.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

Rainbow arches made of shipping containers grace the entrance to one of France's largest seaports.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

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

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

This place bears witness to the loss of many lives during WWII, and stands in stark contrast to the American Cemetery.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

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

The remains of an abandoned funicular railway that once ferried skiers and hikers to great heights in the Pyrenees.

Beneath the city of Lourdes, France is a massive, concrete church.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

Abandoned Nazi train station turned underground astroparticle laboratory.

Abandoned 18th century weapons factory in the Aezkoa Valley.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

A stone structure built thousands of years ago on the Iberian peninsula.

An ancient stone structure that, according to legend, was built by witches.

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

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

An out-of-place grove of sequoias thrives in northern Spain.

A charming Spanish village sits atop this natural limestone overpass.