Saint-Malo is known for its beautiful sandy beaches, perfect for relaxing and soaking up the sun. Spend a day at Plage du Sillon, the main beach in the city, and enjoy the soft sand and clear blue waters. Take a dip in the sea or simply unwind on a beach towel. If you're looking for a quieter spot, head to the nearby Plage de l'Eventail or Plage de Rochebonne. Don't forget to pack your sunscreen and a good book for a day of ultimate relaxation.