2 Days in Switzerland

Hello All!

I will be in Switzerland this July for 2 days. I wish I could have more days, but I cannot. Anyway, one of the evenings will be spent in Zurich. The other, I am not sure. My friend and I want to see beautiful landscapes and get a real taste of Switzerland. We will be using the public transit system. Does anyone have ideas for us?

Thank you for any advice!