Taiyuan

City · c. 936 CE · in Central Asia

Capital of Later Jin (936–946), Northern Han (960–979).

Thingvellir National Park (c. 936 CE): Capital of Icelandic Commonwealth (936–1262).
Isfahan (c. 936 CE): Capital of Ziyarid dynasty (936–979), Great Seljuk Empire (1040–1194).
Arles (c. 936 CE): Capital of Kingdom of Arles (936–1378).
Hyrcania (c. 936 CE): Capital of Ziyarid dynasty (936–979).
Ray (c. 936 CE): Capital of Ziyarid dynasty (936–979), Great Seljuk Empire (1040–1194).
Vedeno (940 CE): Capital of Caucasian Imamate (1828–1858).
Algiers (944 CE): Capital of Regency of Algiers (1706–1830), Free French (1940–1943), People's Democratic Republic of Algeria (1963–today).
Nin (c. 926 CE): Capital of Kingdom of Croatia (926–1098).
Biograd na Moru (c. 926 CE): Capital of Kingdom of Croatia (926–1098).
Jiangling County (c. 926 CE): Capital of Jingnan (926–963).

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.
Jeonju (c. 892 CE): Capital of Hubaekje (892–935).
Kaesong (c. 911 CE): Capital of Taebong (911–918), Goryeo (922–1392).
Changsha (c. 911 CE): Capital of Southern Chu (911–951).