Odessa is the third most populous city of Ukraine and a major seaport and transportation hub located on the northwestern shore of the Black Sea. Odessa is also an administrative center of the Odessa Oblast and a multiethnic cultural center. Odessa is sometimes called the "pearl of the Black Sea," the "South Capital", and "Southern Palmyra". The predecessor of Odessa, a small Tatar settlement, was founded by Hacı I Giray, the Khan of Crimea, in 1440 and originally named after him as "Hacıbey". After a period of Lithuanian control, it passed into the domain of the Ottoman Sultan in 1529 and remained in Ottoman hands until the Ottoman Empire's defeat in the Russo-Turkish War of 1792.