Like many visitors to the alpine nation, I’m familiar with Switzerland’s most popular destinations – Interlaken, Grindelwald, Lucerne, Zermatt. My family has spent many hours wandering trails in the Swiss Alps, but Graubunden was not, until recently, on my radar. That tennis champ Roger Federer, one of Switzerland’s greatest athletes and its most famous tourism ambassador spends time here, intrigued me. Federer knew something about Graubunden and I needed to find out what.