If your trip to Saint-Prex is all organized but your travel itinerary is a little on the empty side, let us give you a helping hand.Nothing tops visiting new places. While you're staying in the area, Church of St. Sulpice and l'Arboretum National du Vallon de l'Aubonne should be among them. One more sight to keep in mind is Audrey Hepburn Cemetary.