Frankfurt

City · 100 CE · in Europe

Capital of East Franks (850–910), Confederation of the Rhine (1809–1813), German Confederation (1815–1863).

Edirne (125 CE): Capital of Ottoman Empire (1365–1453).
York (71 CE): Capital of Kingdom of Deira (534–633).
Bagram (c. 43 CE): Capital of Kushan Empire (43–237), Eastern Kushans (238–346), Western Kushans (238–259).
Gungnae (c. 3–427 CE): Capital of Goguryeo (3–427).
Bagan (200–1293 CE): Capital of Pagan Kingdom (850–1293).
Kabalaka (c. 2 BCE – c. 461 CE): Capital of Caucasian Albania (2 BCE–461).
Bursa (202 CE): Capital of Ottoman Empire (1329–1365).
Ezhou (c. 207 CE): Capital of Eastern Wu (207–229).
Vijaya (c. 207 CE): Capital of Chámpa (207–1652).
Trier (16 BCE – 1618 CE): Capital of Electorate of Trier (1333–1618).

Around the same time and place

Colosseum (80 CE): Flavian amphitheatre in Rome, completed in 80 CE under Titus, which held tens of thousands of spectators for gladiatorial games.
Eruption of Mount Vesuvius (79 CE): Eruption that buried the Roman towns of Pompeii and Herculaneum under ash, preserving them; described by Pliny the Younger.
Hadrian's Wall (122 CE): Defensive wall across northern Britain begun in 122 CE under Hadrian, marking the north-west frontier of the Roman Empire.
Praetorian Guard (27 BCE – 312 CE): Augustus organised the Praetorian Guard in 27 BCE as the bodyguard of the Roman emperors. The guard came to make and unmake emperors, and Constantine the Great disbanded it in 312.
Nero (37 CE – 68 CE): Roman emperor remembered for his extravagance, his persecution of Christians after the Great Fire of Rome and his suicide during a revolt.
Boudican revolt (c. 60 CE): Boudica, queen of the Iceni, led a revolt that burned Camulodunum, Londinium and Verulamium before it was crushed by the Romans.
Hadrian (76 CE – 138 CE): Roman emperor who consolidated the empire's frontiers, travelled throughout its provinces and rebuilt the Pantheon.
Marcus Aurelius (121 CE – 180 CE): Roman emperor and Stoic philosopher, author of the Meditations, who spent much of his reign fighting on the Danube frontier.