Crimea

Region

Peninsula on the north coast of the Black Sea. Russia annexed it from the Crimean Khanate in 1783; since 2014 it is held by Russia and claimed by Ukraine.

Wikipedia

Held by

April 19, 1783 – September 14, 1917 Russian Empire de jure Annexed from the Crimean Khanate
September 14, 1917 – December 30, 1922 Russia de jure Fought over in the Civil War; White forces held it until November 1920
December 30, 1922 – December 26, 1991 Soviet Union de jure Part of the Russian SFSR until 1954, then of the Ukrainian SSR
November 16, 1941 – May 12, 1944 Germany de facto Axis occupation in World War II
since December 26, 1991 Ukraine de jure Recognized as Ukrainian by most states
December 26, 1991 – March 18, 2014 Ukraine de facto
since March 18, 2014 Russia de facto Annexed by Russia; the annexation is not widely recognized

Places in Crimea 4

Perekop · Sevastopol · Simferopol · Yalta