Make sure you have enough gas in the tank, because Avignon is well worth a detour. Located 25 miles from Saint-Marcellin-les-Vaison, it offers up some wonderful attractions, such as Palais des Papes and Place de l’Horloge. Nîmes, 45 miles away, is another destination that’s worth the journey. Visit Maison Carree and Nîmes Museum of Natural History and Prehistory, two great sights in the area.