After researching various areas in Switzerland, I cannot decide on my itinerary for July trip. Flying into Zurich, I will have five days to see Switzerland before taking a train to Paris. I was planning Lucerne, Zermott, Laussane but I'm unsure now as Berne looks great as well as Interlochen. I need advice from someone who knows this country well as I don't want to spend the entire time on a train. I'd like to see the Alps, the lakes, and interesting cities/villages.