Vienna

City · 101 BCE · in Europe

Capital of Holy Roman Empire (1497–1806), Holy Roman Empire Minor States (1497–1806), Austrian Empire (1806–1867), and 3 more.

Worms (101 BCE): Capital of Burgundian Kingdom (414–437).
Zafar (c. 110 BCE – c. 525 CE): Capital of Himyarite Kingdom (110 BCE–525).
Alexandria on the Caucasus (c. 126 BCE – c. 10 CE): Capital of Indo-Greeks (126 BCE–10).
Pamplona (74 BCE): Capital of Kingdom of Navarre (1162–1428).
Erbil (c. 63 BCE): Capital of Kingdom of Adiabene (63 BCE–370).
Mtskheta (c. 63 BCE): Capital of Caucasian Iberia (63 BCE–533).
Tbilisi (c. 63 BCE): Capital of Caucasian Iberia (63 BCE–533), Principality of Iberia (682–740), Kingdom of Georgia (1122–1466), and 1 more.
Samosata (c. 63 BCE – c. 72 CE): Capital of Kingdom of Commagene (63 BCE–72).
Armaztsikhe (c. 63 BCE – c. 533 CE): Capital of Caucasian Iberia (63 BCE–533).
Jolbon (c. 36 BCE): Capital of Goguryeo (36 BCE–3).

Around the same time and place

Julius Caesar (100 BCE – 44 BCE): Roman general and statesman who conquered Gaul, won a civil war and became dictator; his assassination led to the end of the Republic.
Augustus (63 BCE – 14 CE): First Roman emperor, who ended the civil wars and ushered in the Pax Romana, a long period of relative peace.
Carthage (c. 814–146 BCE): Traditionally founded by Phoenician settlers from Tyre, Carthage grew into the capital of a maritime empire that dominated the western Mediterranean until Rome destroyed it.
La Tène culture (c. 450–50 BCE): Iron Age Celtic culture named after a site on Lake Neuchâtel, Switzerland, known for its flowing curvilinear art; it spread across much of Europe.
Punic Wars (264–146 BCE): Three wars between Rome and Carthage for control of the western Mediterranean ended with Rome's destruction of Carthage in 146 BCE.
Caesar’s Gallic Wars (58–50 BCE): Julius Caesar conquered Gaul in a series of campaigns, bridged the Rhine, twice crossed to Britain, and crushed the revolt of Vercingetorix at Alesia in 52 BCE.
Etruscan civilization (c. 900–27 BCE): Civilization of ancient Etruria in central Italy, organised in city-states, which strongly influenced early Rome before being absorbed by it.
Pergamon (801 BCE – 62 CE): Capital of Kingdom of Pontus (281 BCE–62), Kingdom of Pergamon (279 BCE–133 BCE).