Isère has long been at the forefront of sustainable tourism and, thanks to its extensive public transport network, there are myriad ways to access the region’s spectacular landscape without setting foot inside a car. Some of the region’s best car-free hikes include the route along the cliffs of the Petites Roches plateau in the Chartreuse mountains, past lookouts and hang-gliding launch sites. At just under 7km long, it’s an enjoyable half-day hike - or longer if you pack a good picnic, and maybe a small bottle of the famous Chartreuse liqueur.