Zurich pairs the Bahnhofstrasse banking strip with the Niederdorf alleys and lake-edge swimming at Seebad Enge, and Luzern's lake plus Mount Pilatus and Rigi sit an hour southwest by train.
Lake Zurich swimming season at peak from Seebad Utoquai, Street Parade the second Saturday of August, and Pilatus and Rigi cog trains running their full schedule.
Zurich Film Festival late September into early October, Knabenschiessen festival second Monday of September, and Mount Rigi viewpoints haze-free.
Andermatt and Engelberg ski an hour by train, Sechseläuten on the third Monday of April burning the Böögg snowman, and Zurich Christmas market in the Hauptbahnhof.
Lake basin warming, Swiss National Museum and Kunsthaus exhibitions reopen for spring, and Lindenhof terrace pleasant for sunset over the Limmat.