The mountain serpentine on the Furka Pass in the Swiss Alps is dizzying at any time of the year. Much less often, once every few years, you may be lucky enough to witness another stunning spectacle in winter Switzerland. Wind, water and frost can turn the embankment of Lake Geneva into the real possessions of the Snow Queen in one night. The next morning, cars and boats, trees and lampposts, benches and railings - the entire embankment turns into a giant park of bizarre ice sculptures.