In reply to Cusco:
the Ecrin's around Briancon, this is a great area for family fun, the area boasts 300 days of sunshine a year, not sure this is that 100% correct but we do get our weather up from the med, and it's normally very settled and warm in summer.
for climbing there are over 3300 routes over five rock types and grade's to suit every level, some great kid crags, there are 24 Via Ferrata's again set to different levels so one for kids and family to more alpine feeling ones, lots of mountain biking from relaxing runs along some of the alpine rivers to some full on down hill crash fests, also the best rivers in france means great white water rafting and kayaking, and some flat water stuff to.
also some very nice walking a great one with kids is up to the glacier blanc, not hard and very rewarding, also there are some very nice lakes that are set up for swimming and relaxing, and spread down the valley some old forts worth a look round, and best of all a place you can feed marmots which is always a favourite,
I live in the Vallouise valley just as it joins the Durance and happy to help if people would like information about the area, travel option, accommodation, activities or just where is good to climb.
drop me a line if you would like some more info rob@dream-trails.com