We wanted to pack a lot into our few days in Paris: Inventing Impressionism at the Musée d’Orsay (until 14 July), and, for my techie husband, the new Maison Poincaré maths museum near the Sorbonne (monoglot polymaths can relax: it’s bilingual). We’d been too late to book for Serge Gainsbourg’s house on the Left Bank (already sold out for 2024!) but the new Quai de la Photo floating contemporary photography museum was showing work by the late Jane Birkin’s daughter, Kate Barry. We also wanted to wander round galleries in newly arty Rue Béranger in the Marais and maybe catch...