Justinian I — Byzantine Emperor and Lawgiver

Justinian was born around 482 to a peasant family in the Balkan province of Illyria. His uncle Justin, a career soldier who rose to command the imperial guard and eventually the throne, brought the young man to Constantinople and gave him a classical education and military training.

Location: Tauresium, Illyria

Justin died in August 527, and Justinian succeeded him as sole emperor of the Eastern Roman Empire. He inherited a realm engaged in constant war with Sassanid Persia and a state apparatus he would spend four decades attempting to reform.

Location: Constantinople

Justinian ordered a commission under Tribonian to compile the chaotic mass of Roman statutes into a single code. The Codex Justinianus, published in 529 and revised in 534, gathered centuries of imperial law into one authoritative text for the whole empire.

Location: Constantinople

Justinian prohibited pagans from teaching, ending the operation of the Academy that Plato had founded in Athens nearly a millennium earlier. The remaining Neoplatonist scholars emigrated to Persia, marking the end of institutional pagan philosophy in the Mediterranean world.

Location: Athens

Chariot-racing factions united against Justinian's tax officials and burned much of central Constantinople, declaring a rival emperor. Justinian considered flight; the empress Theodora reportedly refused to leave, and generals Belisarius and Mundus crushed the crowds in the Hippodrome, killing tens of thousands and leaving the emperor's power unchallenged.

Location: Constantinople

The Digest, a massive compilation of juristic opinions, and the Institutes, a student textbook, were promulgated, completing the Corpus Juris Civilis. This body of civil law became the foundation of most European legal systems after its 11th-century revival and still underlies civil-law jurisdictions worldwide.

Location: Constantinople

Belisarius landed in Africa in 533 and destroyed the Vandal Kingdom by early 534, returning North Africa to imperial rule. The victory was rapid and comparatively cheap, and it encouraged Justinian's far more costly ambitions in Italy.

Location: Carthage

On the ashes of the riots, Justinian built the new Hagia Sophia, designed by Anthemius of Tralles and Isidore of Miletus. Its vast dome was the largest interior space in the world, and contemporaries said the emperor proclaimed he had outdone Solomon. It served as a cathedral, then a mosque, and as a museum-mosque since 2020.

Location: Constantinople

The first recorded bubonic plague pandemic reached the capital in 541 and recurred across the Mediterranean for two centuries, killing millions and hollowing out the empire's tax base and armies. Justinian himself survived infection, but the pandemic constrained everything his reconquests had gained.

Location: Constantinople

After nineteen years of warfare against the Ostrogoths, including the capture and loss of Rome five times, imperial authority was restored over Italy in 554. The peninsula was economically ruined and demographically shattered, and much of it would be lost to the Lombards within a generation of Justinian's death.

Location: Ravenna

Justinian died in November 565, leaving no designated heir and an empire stretched across three seas with a depleted treasury. Historians debate whether his reign was the last flowering of Roman greatness or an overreach that hastened the empire's later contraction; his law code, and the Hagia Sophia, outlasted both judgments.

Location: Constantinople