Bilhorod Kyivskyi (Ukrainian: Білгород-Київський) or Belgorod Kiyevsky[a] (Russian: Белгород Киевский) was a legendary city-castle in Kievan Rus',[1][2] on the right bank of the Irpin River.

It ceased to exist after the Mongol invasion of Kievan Rus' and the destruction of Kiev in 1240.

[5] According to the chronicle, Belgorod was the favourite residence of Vladimir I, who moved a lot of his people there, including his three hundred concubines.

Later, the veche became the main form of government in the Novgorod Republic and other states in northern Rus'.

[3] In the 12th century, the city played the same role as earlier Pereyaslavl and Novgorod; it became the seat of the heir of the grand prince of Kiev.

[3] The tradition started with Vladimir II Monomakh, who transferred his son Mstislav there in 1117.