Don’t be dismayed at the view as you emerge from the Porte de Vanves Metro stop, early on a Saturday morning. Streetscape aesthetics are of secondary importance to the flock of white vans over there across the road. Be drawn fatefully towards them, for that way leads to adventures in happy kismet. Over 300 flea-marketeers are about hold you spellbound for hours. Crammed on tables, piled on blankets, you will find landscapes, papyrus, diamonds, laces, nutcrackers, wedding dresses, swords, spiders, bibles, maps, lamps, the most beautiful modernist chest of drawers: time travel piece by piece. Prices can be astonishing, at either end of the spectrum. Ignore them. Hold out as many crispy Euros as you think that painting is worth, raise your eyebrows jauntily and take your chances. At about 1pm these treasures will disappear surprisingly quickly back into the white vans. You will go home on the Metro with many flimsy plastic bags and an aura of contentment.