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753 BC - City of Rome established by Romulus and Remus according to Livius.
A map of Rome in 753 BC. Colours show topography, with green lowlands and brown highlands. The Latin names of hills are included in all caps.
After 578 BC Servius Tullius built a circum wall around Rome.
A map of the City of the Four Regions, roughly corresponding to the city limits during the later kingdom. The division is traditionally, though probably incorrectly, attributed to Servius Tullius
St Peter, regarded in Catholic tradition as the first Pope, is believed to have been crucified in Rome during the reign of Nero (c. 64–67 AD).
The Colosseum opened in 80 AD
27 BC - Augustus is made Rome's first emperor.
13 BC - The Senate commissions the Ara Pacis to honor Augustus' return to Rome.
80 AD - While Titus is inspecting the damage of the eruption of Vesuvius, a fire breaks out in the city for three days, destroying Capitoline temples and the Pantheon.
125 AD - Emperor Hadrian has the Pantheon reconstructed, assuming its current appearance.
212 AD - All the inhabitants of the empire are granted citizenship of Rome.
476 - Romulus Augustulus is deposed, traditionally considered the end of the Western Roman Empire and the beginning of the Middle Ages in Europe. Constantinople continues to be the capital of the Eastern Roman Empire.
1657 - Borromini finishes his work in Sant' Agnese in Agone.
1676 - Pope Innocent XI (1676-1689) initiates major reforms; stabilises papal finances; condemn nepotism; upgrades clerical morals; finances Austria's wars against Ottoman Empire to protect Vienna and Hungary. However he fails in efforts to reduce royal control of the Church in France.
J. Willoughby Rosse (1859). "Rome". Index of Dates ... Facts in the Chronology and History of the World. Bohn's reference library. London: H.G. Bohn. hdl:2027/hvd.32044098621048– via HathiTrust.