Pleasant temperatures in the high 70s and mild evenings make July a lovely — and popular — time to visit “the Swiss Riviera” of Lake Geneva. This year, the Fete des Vignerons, the Winegrowers’ Festival, will attract hundreds of thousands of visitors from July 18-Aug. 11. Held about once every 20 years, the festival celebrates Swiss wine and culture in the town of Vevey, in the heart of the Lavaux wine region where grapes have been planted since Roman times. A hike or stroll among the hilly, terraced vineyards of the region is a great pleasure in summer even if you’re not there for tasting. Lakeside Vevey was once home to Charlie Chaplin, and a museum there commemorates his family life and work. Along the lake, the next town of Montreux will feature its annual Jazz Festival from June 28-July 13 with music of every genre from jazz to rock and country to pop. Freddie Mercury of Queen composed and recorded his last album in Montreux, and a bronze statue stands at the lakeside promenade in his memory, perpetually decorated with flowers by his faithful fans. In Lausanne, the iconic Beau-Rivage Palace offers classic comfort, and their Montreux steamboat turns into a floating restaurant during summer. Not far away, where the Rhone meets Lake Geneva, is the Mandarin Oriental, Geneva with five-star luxury, mountain views, and peaceful river vistas.