Kaifeng

City · c. 951 CE · in Central Asia

Capital of Later Zhou (951–960).

Nantes (c. 947 CE): Capital of Duchy of Brittany (947–1491).
Rennes (c. 947 CE): Capital of Duchy of Brittany (947–1491).
Algiers (944 CE): Capital of Regency of Algiers (1706–1830), Free French (1940–1943), People's Democratic Republic of Algeria (1963–today).
Khajuraho (c. 960 CE): Capital of Chandela Kingdom (960–1311).
Amalfi (c. 960 CE): Capital of Republic of Amalfi (960–1033).
Awantipora (c. 960 CE): Capital of Utpala Dynasty (960–1002).
Lin'an Prefecture (c. 961–1278 CE): Capital of Northern Song (961–1027), Southern Song (1028–1278).
Vedeno (940 CE): Capital of Caucasian Imamate (1828–1858).
Luxembourg (963 CE): Capital of Duchy of Luxembourg (1429–1449).
Copenhagen (c. 965 CE): Capital of Kingdom of Denmark (965–1406), Kalmar Union (1443–1523), Denmark-Norway (1536–1814).

Around the same time and place

Tang dynasty (618–907 CE): The Tang dynasty, ruling from Chang'an, presided over a cosmopolitan golden age of poetry, Buddhism and trade.
Goryeo (918–1392 CE): Dynasty founded by Wang Geon with its capital at Kaesong; the name Korea derives from it.
Song dynasty (960–1279 CE): Founded by Zhao Kuangyin with its capital at Kaifeng, the Song saw a commercial revolution, paper money and advances in printing and science.
Silla (c. 57 BCE – c. 935 CE): Kingdom with its capital at Gyeongju, traditionally founded in 57 BCE, that unified most of Korea in the 7th century.
Imperial examination system (605–1905 CE): The Sui formalised civil service examinations for selecting officials, a system that lasted until its abolition in 1905.
Kaesong (c. 911 CE): Capital of Taebong (911–918), Goryeo (922–1392).
Changsha (c. 911 CE): Capital of Southern Chu (911–951).
Hangzhou (c. 911 CE): Capital of Wuyue (911–978).