There aren’t many places that tick all the boxes for a day out with the family, but the Parc Pré Vert at Signal de Bougy appears to do just that.

Located on the hillside half way between Geneva and Lausanne, several hundred meters above Lake Geneva, the park covers an area of about 110 acres, of which 40 are dedicated to welcoming children and their families. Among the park’s visitors you can also count on diners looking for fine food with a view, as well as business people who recognize the excellent value of the “forfait seminaire” when booking a meeting place for their work colleagues.

Once of the first things you notice when you drive up to Signal de Bougy is the outstanding vista!   There can be few places in Vaud where you get such a great vantage point looking down the lake in one direction towards the fountain at Geneva, back again in the other direction towards Montreux and Le Bouveret, and of course straight ahead towards the Alps and Mont Blanc.
http://www.knowitall.ch/local-news/leisure/outings-and-trips/1595-everything-you-could-possibly-want-on-a-day-out-with-the-family-at-signal-de-bougy