The two lighthouses outside Pointe-du-Raz, close to Plogoff, Finistère, Brittany.
La Vieille ("The Old Lady" - to the right) lies on a rock known as Gorlebella (Breton for "farthest rock"),
across from the companion lighthouse Tourelle de la Plate, also known as Petite Vieille ("Little Old Woman").
They're set up for guiding ships though the treacherous strait Raz de Sein, where violent waves and tidal currents rule.
The cliffs at Pointe-du-Van (Cap Sizun) in the background.
Ref: La Vieille in Wikipedia