These are just a few things to see in Switzerland
The Matterhorn is a big free standing horn shaped mountain. The Matterhorn is right next to the town of Zermatt. It is a treacherous hike to the top, many people have died trying.
The Jungfrau region is like a great skiing area/resort. There is great skiing, and a cute village called: Mürren. The Jungfrau region is a must-see in Switzerland. You can also see some famous mountains from there.
Zermatt is a small town at the base of the Matterhorn. It is a skiing village and many tourists go there each year. It is a fun lively town. I would recommend going there for a few days. Please note that all of Switzerland and especially Zermatt and other big tourist areas are quite expensive.
Klein Matterhorn is a smaller mountain next to the Matterhorn. It looks like the Matterhorn which is why it's called Klein Matterhorn because, Klein means small so it essentially means "Small Matterhorn." You can go skiing from up there and there is a viewpoint from up there.