On the other side of the valley, at 2525m this peak of the Aiguilles Rouges massif provides the best views of the Mont-Blanc massif. A round trip adult pedestrian (not skier) ticket is about €18. The other option is to take the cable car with a change at Planpraz (1999m) from Chamonix. If you are fit there is a path can walk back down to Chamonix.