The French Riviera without art is like a Matisse without the sun. Each needs the other to make sense of itself.

So I get why the Instagrammers are outside Le Negresco, a hotel in Nice, clustering around a Niki de Saint Phalle supersize statue of Miles Davis. The jazz musician toots a note of fun at the entrance of the rosy-domed landmark on the Baie des Anges.