Joensuu (ˈjoensuː; Jovensuu; river's mouth) is a city and municipality in North Karelia, Finland, located on the northern shore of Lake Pyhäselkä (northern part of Lake Saimaa) at the mouth of the Pielinen River (Pielisjoki). It was founded in 1848 by Russian Emperor Nicholas I. The population of Joensuu is (), and the economic region of Joensuu has a population of 115,000. It is the largest city in Finland. The nearest major city, Kuopio in North Savonia, is located to the west. From Joensuu, the distance to Lappeenranta, the capital of South Karelia, is along Highway 6. As is typical of cities in Eastern Finland, Joensuu is monolingually Finnish. Along with Kuopio, Joensuu is one of major urban, economic, and cultural hubs of Eastern Finland. Joensuu is a student city with a subsidiary of the University of Eastern Finland, which has over 20,000 enrolled students, and a further 4,000 students at the Karelia University of Applied Sciences. The explanation of the coat of arms of Joensuu reads: ”shield twice blocked with upper moat and lower corrugated; fields in red, silver and black.” The wave bar of the subject refers to the location of the city along the Pielinen River and the position of the moat near the eastern border of Finland, while its colors black and red are considered typical colors of Karelia. The coat of arms was designed by Toivo Vuorela, and it was approved by the Joensuu City Council at its meeting on May 10, 1957. The Ministry of the Interior confirmed the use of the coat of arms on November 19 of the same year. In addition to the coat of arms, the city of Joensuu also uses a flag based on it, in which the silver of the coat of arms has been replaced by white. The city of Joensuu, founded by the Czar Nicholas I of Russia in 1848, is the regional centre and the capital of North Karelia. During the 19th century Joensuu was a city of manufacture and commerce. When in 1860 the city received dispensation rights to initiate commerce, former restrictions against industry were removed and the local sawmills began to prosper and expand.