Río Negro (Spanish pronunciation: [ˈri.o ˈneɣɾo], Black River) is a province of Argentina, located at the northern edge of Patagonia. Neighboring provinces are from the south clockwise Chubut, Neuquén, Mendoza, La Pampa and Buenos Aires. To the east lies the Atlantic Ocean.
San Carlos de Bariloche, usually known as Bariloche, is a city in the province of Río Negro, Argentina, situated in the foothills of the Andes on the southern shores of Nahuel Huapi Lake and is surrounded by the Nahuel Huapi National Park. After an extensive public works and architectural buildup the city emerged in the 1930s and 1940s as a major tourism centre with ski, trekking and mountaineering facilities apart from numerous restaurants, cafés and chocolate shops. The city has a permanent population of 108,205 according to the 2010 census.