Although Kyiv is the nation's capital and its own administrative region, the city also serves as the administrative center for Kyiv Oblast (province). The oblast entirely surrounds the city. In addition, before 2020 Kyiv also served as the administrative center for the oblast's Kyiv-Sviatoshyn Raion (district).
Sevastopol is also administratively separate from the Autonomous Republic of Crimea, retaining its special status from Soviet times as a closed city, serving as a base for the former SovietBlack Sea Fleet. The city was home to the Ukrainian Navy as well as the Russian Black Sea Fleet, although since the Crimean crisis, both Crimea and Sevastopol were annexed by Russia as federal subjects, a move declared illegal by both the Ukrainian government and a majority of the international community.
Similar status existed at times of the Russian Empire and many of them were located on shores of Black Sea. Among the first city municipalities that were established on territory of modern Ukraine in the beginning of 19th century were Odesa, Taganrog and Feodosia.
Odesa (1803–1838, 1856–1920)
Feodosia (1804–1829)
Kerch-Yenikale (1821–1920)
Izmail (1830–1835)
Sevastopol (1872–1920), in 1805–1864 part of Mykolaiv military govtenorate
Mykolaiv (1900–1917), in 1805–1900 as a separate military govtenorate
Yalta (1914–1917)
Taganrog (1802–1887), Taganrog and its vicinities were taken away from Ukraine in 1925 after signing of the 1922 Union treaty.
^Kappeler, Andreas (2022). Russische Geschichte [Russian History] (in German) (8th ed.). München: C. H. Beck. p. 47. Mit der Annexion der Krim, die in die russische Verwaltung eingegliedert wurde, und mit der Etablierung eines Marionettenregimes in der Ost-Ukraine verletzte Russland mehrere internationale und bilaterale Abkommen, in denen es die Souveränität und territoriale Integrität der Ukraine garantiert hatte. [With the annexation of Crimea, which was incorporated into the Russian administration, and with the establishment of a puppet regime in eastern Ukraine, Russia violated several international and bilateral agreements in which it had guaranteed Ukraine's sovereignty and territorial integrity.]