If you can get them to switch of 'Frozen' or stop chasing pigs on Minecraft there are some fantastic family-friendly outdoor events and experiences to discover this summer in Switzerland.
Don't just stand there on the promenade admiring the lake, get out and enjoy it. Pedalos can be hired from the lake's many boat hire companies and although it may look like you're messing around with an oversized child's toy, you'll be burning more calories than on a bike ride up an Alpine pass. For something a bit more classic, rowing boats, speedboats and yawls are also available. And don't forget to look back and take in the views of the city as you work out.
The Swiss Transport Museum huge, well-designed and enjoyable to visit. With loads of interactive displays and exhibits for kids of all ages as well as the museum's large inner courtyard with an artificial lake for summer as well as a child-size "airport" and canals for kids to practise shunting goods around in.