I'm going to Switzerland, Geneva. What are the most beautiful places to see?

In Geneva the Cathedrale St. Pierre (St Peter's of Geneva) and surrounding area are nice and not too far from some of the best shopping areas. Also consider the lake boats either just for the ride or to stop in Lausanne, Vevey, Montreux and other places around the lake. The best views of the mountains are towards the far end of the lake. The train is faster but you will take in more views on the boat and not feel rushed. If you have the time, the train trip to Zermatt and the view of the Matterhorn are worthy. A bit easier perhaps are Gstaad and Gruyere for beautiful winter scenery in the mountains.