Vladimir

City · 990 CE · in Europe

Capital of Principality of Rostov-Suzdal (1125–1240), Principality of Vladimir-Suzdal (1294–1389).

Bruges (c. 990 CE): Capital of County of Flanders (990–1384).
Le Mans (c. 990 CE): Capital of County of Maine (990–1481).
Blois (c. 990 CE): Capital of County of Blôis (990–1401).
Rodez (c. 990 CE): Capital of County of Rouergue (990–1065).
Vic (c. 990 CE): Capital of County of Osona (990–1110).
Besalú (c. 988 CE): Capital of County of Besalú (988–989).
Gdańsk (997 CE): Capital of Free City of Danzig (1920–1939).
Stockholm (c. 980 CE): Capital of Kingdom of Sweden (980–today), Kalmar Union (1436–1523), Swedish Empire (1612–1721), and 1 more.
Wroclaw (1000 CE): Capital of Duchy of Silesia (1139–1304), Duchy of Wroclaw (1169–1201).
Cagliari (c. 1000 CE): Capital of Giudicato of Cagliari (1000–1187).

Around the same time and place

Christianization of Kievan Rus' (988 CE): Vladimir the Great adopted Orthodox Christianity from Byzantium and had the people of Kyiv baptised in the Dnieper.
Varangians to the Greeks (c. 800–1100 CE): Scandinavian traders and warriors travelled from the Baltic up the Neva and Volkhov past Novgorod, portaged to the Dnieper and sailed down past Kiev to the Black Sea and Constantinople.
Vitebsk (974 CE): Capital of Principality of Vitebsk (1111–1187).
Kazan (1005 CE): Capital of Khanate of Kazan (1440–1551).
Suzdal (1024 CE): Capital of Principality of Rostov-Suzdal (1125–1240), Principality of Vladimir-Suzdal (1294–1389).
Chufut-Kale (500–1490 CE): Capital of Crimean Khanate (1450–1490).
Bolghar Gord (c. 674–1235 CE): Capital of Volga Bulgaria (674–1235).
Yaroslav the Wise (c. 978 CE – 1054 CE): Grand Prince of Kyiv under whom Kievan Rus' reached its peak; he issued the first law code of the Rus' and built Saint Sophia Cathedral.