Emperor · 482 – 565
Justinian I
Key Takeaways
- Justinian I sought to restore the old Roman Empire from Constantinople.
- He reconquered Italy, North Africa and part of Spain.
- He codified Roman law in the Corpus Juris Civilis, basis of much later law.
- He built the great cathedral of Hagia Sophia.
Justinian I dreamed of making the Byzantine Empire into Rome reborn. From his throne in Constantinople, he reconquered lost provinces, gave the world a monumental code of law, and raised one of the greatest buildings ever made.
The law and the church
Justinian’s most lasting achievement was the Corpus Juris Civilis, a vast codification of Roman law that organized centuries of legal thought — and became the foundation of legal systems across much of the modern world. In Constantinople, the city founded by Constantine the Great, he built the breathtaking cathedral of Hagia Sophia, its enormous dome a marvel of engineering.
The dream of Rome restored
His generals reconquered Italy, North Africa and part of Spain, briefly restoring the old Roman Mediterranean. But the gains were costly and hard to hold, and plague ravaged the empire. Still, Justinian of late antiquity left a legacy in law and stone that has outlasted empires — a dream of Rome that, like Charlemagne’s later, shaped the ages to come.
Reconquered Italy, North Africa and parts of Spain, codified Roman law into the enduring Corpus Juris Civilis, and built Hagia Sophia, marking the high point of the early Byzantine Empire.
Military Feats
- Reconquered Italy from the Ostrogoths and North Africa from the Vandals.
Political Achievements
- Codified Roman law in the Corpus Juris Civilis, foundational to Western law.
- Built Hagia Sophia and many other churches and fortifications.
Historical influence score: 84/100
Influence
Justinian's law code preserved Roman law for the future of Europe, while his building and conquests marked the golden age of the early Byzantine Empire.
Legacy
The Corpus Juris Civilis underlies the legal systems of much of the modern world, and Hagia Sophia remains an architectural wonder.
Little-Known Facts
- His powerful wife, the empress Theodora, helped save his throne during the Nika riots.
- A devastating plague struck the empire during his reign, weakening his gains.
Myths & Misconceptions
Did Justinian restore the Roman Empire?
He recovered much of the West temporarily, but his conquests proved hard to hold, and most were lost within decades of his death.
Connections
Frequently Asked Questions
Who was Justinian I?
Justinian I (c. 482–565 AD) was the Byzantine emperor who reconquered lost Roman lands, codified Roman law, and built Hagia Sophia.
What is the Corpus Juris Civilis?
It is the great codification of Roman law ordered by Justinian, which preserved and organized Roman legal thought and became the foundation of much later European law.
Citations & Sources
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