Rissa is a municipality in Sør-Trøndelag county, Norway. It is part of the Fosen region, the administrative centre of the municipality is the village of Årnset. Other villages in the municipality include Askjem, Husbysjøen, Rørvika, Råkvåg, the municipality of Rissen was established in 1860 when it was separated from the big municipality of Stadsbygd. The spelling was changed to Rissa. On 1 January 1905, the district of Lensvik on the west side of the Trondheimsfjord was separated from Rissa to form a municipality of its own and this left Rissa with 3,394 residents. On 1 January 1964, most of Stadsbygd and the part of Stjørna were merged with Rissa to form a new. The Old Norse form of the name was Rissi and this was probably the old name of the brackish basin of Botn. Even though this is a heavily land-locked fjord with an inlet from the Trondheimsfjord. The name is derived from the verb rísa which means raise or rise. The name of the municipality was historically spelled Rissen, the coat-of-arms is from modern times.
They were granted on 23 January 1987, the arms show a silver crown on a green background. The crown is that of Skule Bårdsson as it is depicted on an old tombstone at the Nidaros Cathedral, Bårdsson was the founder of Rein kloster and the accompanying farm and Rein estate, which lies in the municipality. The crown is a typical headdress used by the medieval Norwegian Dukes, the Church of Norway has four parishes within the municipality of Rissa. It is part of the Deanery of Fosen and the Diocese of Nidaros and this slide is particularly famous because a large portion of the slide happened to be recorded on film by two amateur photographers. The municipality is located on the end of the Fosen peninsula along the Trondheimsfjord. The large lake Storvatnet lies on the border with Lensvik. To the north lie the municipalities of Åfjord, the Flakk–Rørvik Ferry crosses the Trondheimsfjord and connects Rørvik with Trondheim. Sør-Trøndelag travel guide from Wikivoyage Municipal fact sheet from Statistics Norway