- The Decemviri, a temporary commission of ten members, drafted the Twelve Tables, the first written Roman laws.
- The Battle of Salamis, a naval conflict between the Greek city-states and the Persian Empire, ended in a decisive Greek victory, halting the Persian invasion of Greece.
- The construction of the Parthenon, the most famous temple in ancient Greece, dedicated to Athena, began in Athens.
- Aristophanes, the Greek comedic playwright, was born.