(VIDEO) HRH Crown Prince Frederik of Denmark Opens the 2015 Le Gruyère European Curling Championships. Posted byAlexandra November 20, 2015November 20, 2015 On Friday, November 20, 2015, His Royal Highness Crown Prince Frederik of Denmark officially opened the 2015 Le Gruyère European Curling Championships in Esbjerg, Denmark. Click here to view photos. Related