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

A road that winds through this natural cave is the only way to access the small, appropriately-named village of Cuevas.

This enormous censer uses a pulley system installed over 400 years ago.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

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

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

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

Marvel at this immense work of art that greets arrivals to the city.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

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

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

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

Lady Liberty's original designer installed a little clone in this French fountain.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The sunken structure looks like the victim of a catastrophic flood.

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

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

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

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

A set of 27 bamboo tubes creates an eerie soundscape that changes with the wind.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.