If your trip to Deuil-la-Barre is all booked but your itinerary is a little on the empty side, let us give you a few hints and tips.Stade de France and Basilica of the Sacred Heart of Paris are some awesome attractions that all serious sightseers should make time to check out. Map out your route and spend a couple of hours taking in each one.Plan a stop at Basilica of Saint-Denis. It's one attraction you'll find on travelers' must-do lists. If you still have some space on your travel itinerary, Casino Barrière Theater and Musée d'Art et d'Histoire will keep you busy too.