If you are into your classical stuff, keep an eye on the Verbier festival in the summer.

In Valais, I also enjoyed the Grande Dixence dam. That thing is enormous and as the road up there twist and turn, it suddenly appears in front of you. Once you are at the bottom the scale of it and its height is amazing, you could see rain at the bottom and snow at the top of it, one of Switzerland seven man-made wonders.

If you fancy a nice little village without too many tourists, to spend the night, Evolene is cute and has a couple of lovely chalet hotels, all creaking woods and lovely vistas.

Another curiosity, for amateurs of military stuff, are the Swiss airforce digs in the upper Rhone valley, in the German speaking part of the country, on the way to Fiesch, at times you are blocked on the road to let a F18 jet cross from side of the valley to the other or to go to the tiny runway (foreign pilots have a healthy respect for Swiss military pilots after a few training exercises there...In the days of Swissair, you had to be a military pilot to work for them)