Signal de Bougy

Signal de Bougy is easily one of the best collection of playgrounds in this region. Everyone should visit here at least once per year!
There's a water play area, numerous climbing frames including a rocket and a large rope polygon.
The park also boasts collections of pigs, cows, chickens, ... to stroll around.
There are lots of picnic tables, a BBQ area and a Migros cafeteria, which includes an indoor play area. Signal de Bougy is  free to enter and enjoy.
For older children there are tree walk ways within parc adventure.

The Tall Ship of Lausanne

It's never too cold to play, even with ice on the ground. The tall ship playground in Lausanne is by the lake in Ouchy. There are also giant chess and draft sets by the fountains.

One of the highlights of visiting here is the journey! You can travel from Lausanne city centre on what must be one of the only sloping tube lines. You can sit up front to "drive" it down the hill!

The Tram at Confort

Confort is a pretty village just outside of the Pay de Gex region. It has a lovely surprise in its centre - a smart little play ground with an adjacent Tapas restaurant, the tram bar. Partially housed in an old railway carriage. This is a great and unfortunately rare combination: a restaurant with great reasonably priced food with good fenced in play structures which are easily visible from the restaurant terrace. This is good location to start many waymarked paths into the Jura.

Either Side of Rolle Castle

There are two lakeside playgrounds just a short walk from Rolle Castle . To one side of the castle there is a basic structure and in the other direction there is a more complicated play area including a sand pit and a tube slide. There are also good picnic tables and you could happily spend all afternoon here. There is a unique chair rotating at 45 degrees to the perpendicular which is quite odd to use (not pictured).

Hoover your Car and Play

This playground is just off of Route de Meyrin, a four lane road through Geneva with trams whizzing by. It only has one purpose - to occupy your children in safety while you wash and vacuum the car. I admire the owner for providing these facilities.

Sailing Boat in Genthod

For the first time it was one of our children who led us to this playground - she 'discovered' it on a school trip! 
Genthod is a very well to do village of many châteaux and, of course, it has an immaculate and well appointed park. Play structures include a sailing boat, an arial runway, a sandpit and various wooden climbing frames.
It's a short walk from this park to the lake side where you can have a wee paddle. Go down the hill, past the train station and you're there. I think you are really meant to land here on your yacht and head to Le Creux-de-Gentold for your filet de perches... but we just stopped for ice-cream.

Tipping Water Buckets in Meyrin

Meyrin has surpassed itself with its newest playground. I am sure that Meyrin must hold a record for playground density. The water is button activated, the entire area is covered in bouncy rubber flooring. There are also two climbing frames and some swings. I expect this is where we'll be spending many of our lunch hours over summer.

The Immaculate Plage at Hemance

Hermance is the last piece of Switzerland on Lake Geneva before you enter France. Hermance is a very pretty village that boasts one of the best kept lake side beaches there is. It's a great place for swimming and the playground and sandpit are also extremely well located. The views of Lake Geneva are among the best. There is also a buvette selling wine, beer, saucisse and ice cream. To get to Hermance there is a ferry from Nyon or it is the last stop on Bus E 25 minutes from the center of Geneva. The plage costs 4CHF per adult to enter. Hermance plage is incredibly well kept.

The village itself has a few shops, restaurants and a large stone tower.

The Tower at Chancy

Chancy has one of our most recent playground discoveries. This is a big and high climbing frame. Once a year this park hosts a Fête des Enfants which is a good time to visit.

La Plage de Saint Jorioz, Annecy

The municipal beach at Saint-Jorioz on Lake Annecy has some good sand in particular. I imagine this place is hugely busy in the summer months. There's a well fenced playground but the main attraction is paddling of course.