Spoleto

City · c. 577 CE · in Europe

Capital of Duchy of Spoleto (577–898).

Lucca (c. 577 CE): Capital of Duchy of Tuscia (577–586).
Benevento (c. 577 CE): Capital of Duchy of Benevento (577–1081).
Worcester (c. 577 CE): Capital of Hwicce (577–627).
Ordu-Baliq (c. 587–840 CE): Capital of Eastern Göktürks (587–632), Western Göktürks (587–657), Uyghur Khaganate (750–840).
Carlisle (c. 592 CE): Capital of Kingdom of Rheged (592–646).
Madurai (c. 592 CE): Capital of Pandya Dynasty (592–921), Pandya Empire (1216–1325).
Criccieth (c. 592 CE): Capital of Kingdom of Dunoting (592–625).
Kabul (c. 561 CE): Capital of Turk Shahis (561–874), Durrani Empire (1776–1823), Emirate of Afghanistan (1828–1925), and 3 more.
Sambor Prei Kuk (c. 555–706 CE): Capital of Chenla (555–706).
Suyab (c. 555–749 CE): Capital of Göktürk Khaganate (555–586), Türgesh (704–749).

Around the same time and place

Justinian I (482 CE – 565 CE): Byzantine emperor who reconquered Italy and North Africa, codified Roman law and built the Hagia Sophia.
Hagia Sophia (537 CE): Great church of Constantinople built under Justinian I, whose vast dome made it the largest cathedral in the world for nearly a thousand years.
Plague of Justinian (541–549 CE): First recorded outbreak of bubonic plague in the Mediterranean world; it struck Constantinople in 542 and killed a large share of the population.
Trier (16 BCE – 1618 CE): Capital of Electorate of Trier (1333–1618).
Benedict of Nursia (c. 480 CE – 547 CE): Italian monk whose Rule for monasteries became the foundation of Western monasticism; he founded the abbey of Monte Cassino.
Corpus Juris Civilis (529–534 CE): Codification of Roman law ordered by Justinian I, which later formed the basis of civil law in much of Europe.
Winchester (c. 534 CE): Capital of Kingdom of Wessex (534–927), Kingdom of England (936–1100).
Pope Gregory I (c. 540 CE – 604 CE): Pope who strengthened papal authority, reorganised church administration and sent missionaries to convert the Anglo-Saxons.