Seville

City · c. 1028 CE · in Europe

Capital of Taifa of Seville (1028–1091).

Gniezno (c. 1025 CE): Capital of Kingdom of Poland (1025–1385).
Suzdal (1024 CE): Capital of Principality of Rostov-Suzdal (1125–1240), Principality of Vladimir-Suzdal (1294–1389).
Niebla (c. 1023 CE): Capital of Taifa of Niebla (1023–1053).
Yangon (1035 CE): Capital of Burma (1948–1989), Union of Myanmar (1990–2005).
Algeciras (c. 1035 CE): Capital of Taifa of Algeciras (1035–1058).
Faro (c. 1018 CE): Capital of Taifa of Santa Maria do Algarve (1018–1051).
Béjaïa (c. 1018 CE): Capital of Hammadid Dynasty (1018–1151).
Yinchuan (c. 1038 CE): Capital of Western Xia (1038–1226).
Olomouc (1017 CE): Capital of Margraviate of Moravia (1385–1414).
Nishapur (c. 1040 CE): Capital of Great Seljuk Empire (1040–1194).

Around the same time and place

Reconquista (718–1492 CE): Centuries-long series of campaigns by Christian kingdoms to take the Iberian Peninsula from Muslim rule, ending with the fall of Granada in 1492.
William the Conqueror (c. 1028 CE – 1087 CE): Duke of Normandy who conquered England in 1066 and became its first Norman king.
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).
Cagliari (c. 1000 CE): Capital of Giudicato of Cagliari (1000–1187).
Dijon (c. 1003 CE): Capital of Duchy of Burgundy (1003–1477).
Tortosa (c. 1010 CE): Capital of Taifa of Tortosa (1010–1099).