If your trip to Mont-Louis is all locked in but your itinerary is looking a little empty, let us give you a few hints and tips.Plan a stop at Espace Cambre d'Aze. It's one attraction you'll find on most visitors' must-do lists. If you still have some room on that travel itinerary, Mont-Louis Citadel and Mont-Louis Solar Furnace will keep you on the go as well.