In reply to NickJH:
Central Switzerland has some super routes:
You could spend a good week around the Salbitschijen - the South Ridge is excellent (about 16 pitches with crux of 5/5+?). Other good routes from same hut are SE Face of Zwillingsturm and Incredibile - and there are lots more.
From the same valley you can also get up to the Bergseeschijen area, which also has some shorter routes.
The Engelberg area around the Kingspitz always seems a lot more adventurous to me. I've got the Kingwand on my ticklist for this Summer - looks awesome, but I believe its not so steep as it looks. Quite a few other good routes in the area - Rosenlauistock, Klein - Gross Simelistock (traverse) and Vorderspitz W Ridge (but don't try descending from this in a lightning storm).
The Schweiz Plaisir guides are good for this area plus Handegg, Furka and Susten passes. All well worth a trip.
Dave