If your trip to Saint-Martin-Boulogne is all sorted out but your travel itinerary is looking a little empty, let us give you a helping hand.Make the short drive out of the middle of the neighborhood and spend a couple of hours exploring Nausicaá National Sea Center and Plage De Boulogne Sur Mer. After you've ticked them off your to-do list, venture in the direction of Chateau Musee.