What to do in Arcachon, Aquitaine, France

We caught the train from Bordeaux to Arcachon, an hour-long journey that cost about €30 for a one way trip, and arrived at Arcachon Train Station.  Arcachon is a seaside town on the West Coast of France, almost directly west of Bordeaux.  It looks out over the Bassin D’Arcachon, an inlet that is surrounded on…