If you ever find yourself in the southern French region of Provence, please do yourself a favor and visit Les Calanques, easily accessible from Marseille. These spectacular limestone cliffs alongside the crystal clear blue water of the Mediterranean Sea are a spectacular sight to behold. You can take a bus from the city to the start of several hiking trails that lead you to views of the water, coves, and cliffs that extend up to Cassis. Wear your hiking boots, pack a lunch and your camera, and enjoy the beauty of nature. Cliff jumping OPTIONAL.