Odessa or Odesa (Ukrainian: Одеса; Russian: Одесса;) is the administrative center of the Odessa Oblast (province) located in southern Ukraine. The city is a major seaport located on the shore of the Black Sea and the fourth largest city in Ukraine with a population of 1,029,000 (as of the 2001 census).
The four foreigners' in Russian service met by chance on a Russian military vessel in 1870s - Jose de Ribas, Duc de Rischelieu, Count of Langeron and Franz de Volan. Later on, those four played became instrumental in the city's success: the first one convinced the Russian Empress to found Odessa, the second made it the fourth largest city in Russia in just eleven years, the third one made it free economic zone and the fourth one created the city plan, used to build Odessa, which was considered the most advanced city plan in Russia at that time!
In the 19th century it was the fourth largest city of Imperial Russia, after Moscow, Saint Petersburg and Warsaw. Its historical architecture has a style more Mediterranean than Russian, having been heavily influenced by French and Italian styles. Some buildings are built in a mixture of different styles, including Art Nouveau, Renaissance and Classicist.
Odessa is a warm water port, but militarily it is of limited value. The city of Odessa hosts two important ports: Odessa itself and Yuzhne (also an internationally important oil terminal), situated in the city's suburbs. Another important port, Illichivs'k, is located in the same oblast, to the south-west of Odessa. Together they represent a major transport hub integrating with railways.