A historic Christian shrine nestled within a spectacular natural cave.

A spectacular walk on the flank of a gorge.

Stormy conditions send jets of seawater bursting through holes in the cliffs.

This beautiful spit of land was once the summer playground of the king of Spain.

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

This 19th-century fountain's namesake animal isn't what you think it is.

Giant topiary dog once played a role in a terrorist bomb plot.

A charming Spanish village sits atop this natural limestone overpass.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

For more than half a millennia, this automaton has rung an hourly bell.

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

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

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

Medieval Danse Macabre Fresco in Northern Brittany.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

If they push on just the right spot, even the weakest person can move this titanic boulder.

An aluminum skeleton brings Chinese mythology to the French shore.

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

The largest stone moved during the Stone Age once stood proudly in France.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

Hidden just under the waters around this Turkish island are the ruins of a once great city.