Odessa is a city in the south of Ukraine. The administrative center of the Odessa region and the main naval base of the Ukrainian Navy. The city is a hero. The population of the city as of January 1, 2017 was 993,120 permanent residents. The third largest city in the country. The national composition of the population: 61.7% of Ukrainians, 29.0% of Russians, 1.3% of Bulgarians, 1.2% of Jews. It is located on the shore of the Odessa Gulf of the Black Sea. The largest seaport of Ukraine.Trade, metal processing, oil refining, mechanical engineering, production of medicines and food products are developed. Sanatorium treatment and beach holidays, cruise tourism. A large scientific and educational center. The historical center is listed on the UNESCO World Heritage List. Ensemble of Primorsky Boulevard, Duke de Richelieu Square and Potemkin Stairs.