Saint-Malo is one of the top tourist sites in Brittany.
Known for its great events:

The Route du Rhum,
Etonnants Voyageurs, Quai des Bulles,

Recognized by its walled city, its Beautiful Beaches of Fine Sand,
its spa, aquarium

The coast of Saint Malo are typical of the Brittany coast.

They consist of cliffs and sandy bays
resulting from a long process of erosion and accumulation.

Millennium after millennium, rain water under the action of frost shattered rock.
The sea, through the movement of the waves,
will break those bursts to turn them into gravel and then sand grain.
Lighter, this sand will be transported by currents
and deposited on beaches in sheltered bays.