Parc national de la Vanoise
Within the Tarentaise Valley, there are various other resorts such as Paradiski (Les Arcs, La Plagne) and Espace Killy (Val d'Isère and Tignes). A weekly lift ticket in Les Trois Vallées allows one to ski one day in each of the other two systems mentioned. There were once plans to interlink all systems and resorts to create the – by far – largest ski area in the world. However that vision was ended with the creation of the Vanoise National Park.