Summer in the City of Light means late sunsets and long picnics along the Champ de Mars, listening to guitar strums, breaking bread and drinking Bourdeaux over good conversation. Walking along St. Martin Canal, walking down the Avenue des Champs-Élysées, walking up the hill to Sacré Cœur de Montmartre, walking everywhere you can. And the thing about Paris, is, everything is art in Paris. The sign posts, the metro stations – the doorknobs, the ceilings – a billow of extra cream in a warm café noisette. Every little thing is dressed in fleurettes, red and blue broadcloth, and a tailored adornment of toujours la politesse. Layering at the Louvre: You may already be privy to my aversion to checking luggage. Efficient packing is that sweet spot where my contingency planning tendencies and an intense love of all things miniature collide. For our recent 10-day trip I crazily whittled down to hand luggage only and when I saw a lone suitcase languishing on the open tarmac of the Madrid-Barajas airstrip – bravely standing like a wheeled …