Kozloduy is a town in northwest Bulgaria, located in Vratsa Province, on the Danube River. The city was liberated from Ottoman rule on 23 November 1877 by the Romanian Army under the command of the Imperial Russian Army. Kozloduy is best known for the Kozloduy Nuclear Power Plant, Bulgaria's only nuclear power plant, which is located nearby, as well as the second-largest Bulgarian Danubian island, Kozloduy Island. The city is also known for the ship Radetzky, the boat in which the poet and revolutionary Hristo Botev and with 200 others crossed the Danube River in a final attempt to gather an army and liberate Bulgaria from the Ottoman Empire.

Vratsa Province is a Bulgarian province located in the northwestern part of the country, between Danube river in the north and Stara Planina mountain in the south. It is named after its main town - Vratsa. As of 2016, the province has a population of 170 367 inhabitants, on territory of 3,619.7 km2 (1,397.6 sq mi).