Donetsk (Ukrainian: Донецьк, translit. Donets’k; Russian: Доне́цк, translit. Donetsk; see also: Cities' alternative names), formerly known as Yuzovka after John Hughes, and then Stalino because of steel production in city (there is an erroneous opinion that city was named after Stalin), is a city in eastern Ukraine on the Kalmius river. Administratively, it is a center of Donetsk Oblast, while historically, it is the unofficial capital and largest city of the economic and cultural Donets Basin (Donbas) region. The name of Donetsk comes from the Seversky Donets, a tributary of the Don. The city was founded in 1869 by a Welsh businessman, John Hughes, who constructed a steel plant and several coal mines around the region. Today, the city still remains an important coal mining region of the Donbas and Ukraine, and houses the "Donetsk" special economic zone, established in 1998. The city is currently home to two major professional football teams in Ukraine: Shakhtar Donetsk and Metalurh Donetsk, both of which currently play in the Ukrainian Premier League. Important attractions of the city include the Cathedral Transfiguration of Jesus, the Donetsk National University, and others. According to the 2001 Ukrainian Census, Donetsk is the fifth-largest city in Ukraine.