Calanques
White limestone inlets between Marseille and Cassis — Europe's first periurban land-and-sea park, from En-Vau's turquoise slot to the drowned art of the Cosquer cave.
The Calanques became a national park in 2012, and it remains the strangest proposition among Europe's parks: a genuine wilderness of white Urgonian limestone whose western trailheads are Marseille bus stops. The park was the continent's first periurban national park and first to be drawn on land and sea together — some 85 square kilometres of terrestrial core along the twenty kilometres between Marseille and Cassis, and more than 400 at sea around it, taking in the Riou archipelago's bare islands. The calanques themselves are drowned valleys cut when the Mediterranean stood far lower, now slotted inlets between 400-metre ridges: Sormiou and Morgiou with their cabanon hamlets, Sugiton under the Grande Candelle, and the postcard pair of Port-Pin and En-Vau, where the water over white pebbles goes an implausible glacier-blue.
The sea hides the park's most extraordinary room. At Cap Morgiou, 37 metres down, a tunnel rises into the Cosquer cave, where Palaeolithic artists painted horses, bison, seals and great auks between roughly 33,000 and 19,000 years ago — the only decorated cave in the world with an entrance now under the sea, and a doomed one, as rising water eats the panels. The replica in Marseille is the only visit possible. Above water, the garrigue smells of rosemary and hot stone, Bonelli's eagles hunt the ridgelines, yelkouan shearwaters raft off Riou, and endemic plants like the Marseille sandwort hold to ledges. Protection is doing its work below the waterline too: no-take zones seeded around Riou and Cap Morgiou now export groupers and corb to the whole shore.
What's worth knowing before you go
There is no water anywhere in the massif and almost no shade; this is a winter and shoulder-season park. From June through September, fire danger closes the massifs outright on red-flag days — the access map is published every evening for the next day, and it is enforced. Sugiton runs a summer reservation system to spare its cove. Come by bus (Luminy for Sugiton, Les Baumettes for Sormiou) or from the Cassis side for En-Vau; driving is futile in season.
The connoisseur's version is a sea kayak out of Cassis at first light in October — En-Vau from the water, before the mistral gets up, with the Soubeyranes cliffs glowing across the bay.