Today, I am leaving Switzerland after staying 3 wonderful days in 3 different cities.
If you want a city plus mountain experience, then stay in Lucerne. You have to book a Swiss pass for the travel-through train.
Do not miss Mt. Titlis excursion and you have to buy tickets from the Lucerne station. I would suggest to stay in Lucerne on the day of Mt. Titlis tour because you would need at least 3 hours to complete the package tour of Mt. Titlis.
Next, if you are nostalgic about Zurich, then you can plan accordingly, else, if you want to cherish some village experience, then you must visit Zermatt.
Zermatt is a small village surrounded by a river valley with flowers and mountains all around.
Last but not the least, do not miss the home made Swiss chocolate and beer.