Neuchâtel is one of Switzerland's overlooked gems — a city with a castle, a fantastical street, and a lake that gives it an almost unfair advantage. This app-led scavenger hunt takes you through Neuchâtel on foot, using phone-based riddles to guide you from one landmark to the next. No guide, no fixed start time. • Solve riddles at the Château de Neuchâtel, Une rue fantastique, and the Quai Ostervald — medieval history, architectural...