Limiting evening exposure to blue-light emitting screens on smartphones, tablets and computers can reverse sleep problems and reduce symptoms of fatigue, lack of concentration and bad mood in teenagers, after just one week, says a study.
It's home to the world's first revolving cable car, a glacier cave, a Cliff Walk over Europe's highest suspension bridge, a multi-seater open-to-the-sky Ice Flyer chair lift and a glacier park - to name just a few of its attractions.