The winter fair R&oslash;rosmartnan is a national event with approximately 75.000 visitors each year. The World Heritage site R&oslash;ros forms a unique backdrop. As part of the opening ceremony over eighty equipages from Sweden, &Oslash;sterdalen, Hedmark, Gauldalen and Tydal participate in a parade, marking the arrival in R&oslash;ros after travelling for up to 15 days in the old-fashioned manner with horse and sleighs.