PLUNGING headfirst into Geneva’s River Arve comes as a shock to me. Partly because the water has rushed straight down from the snowy summit of nearby Mont Blanc; partly because I wasn’t expecting to be thrown into a river at 11am on a Monday. Plunge head first into the River Arve like Jonathan did Supplied Lake Geneva is at the heart of everything here, with the city clustered around its shoreline, and locals loving to swim, paddle and sail in its waters Supplied There are a multitude of world-class hiking and biking trails to explore through the flower-coated alpine meadows — as well as incredible paragliding out over the city…