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Home / Information About Rome – FAQ /

When was the Vatican Built?

Written by: Kate Zusmann

when vatican was built

The Vatican’s history as the seat of the Catholic Church began with the construction of a basilica over St. Peter’s grave in Rome in the 4th century A.D.

The Pope used to rule the Papal States, which included most of Italy. Catholic popes tried to stop Italy from becoming one country because they feared to lose the control of at least one of the Papal States. In 1861, Italy was unified under the King of Savoy, but Rome and Latium remained unconquered. On September 20, 1870, Italian troops invaded and Rome became capital of the new kingdom. In 1929, Benito Mussolini decided to sign an agreement with the Holy See, called the Lateran Treaty, which established the Vatican State.

Author: Kate Zusmann

Kate Zusmann

I have lived in the Eternal City for the past 12 years. They say every angle of Rome has its history, and I'm here to tell you about the most intriguing historical facts and city legends. :)

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About us ROME.US Authors Kate Zusmann and Artur Jakucewicz
2025.We're Kate and Artur, a duo bound by our shared fascination with the Eternal City – Rome. Our paths, driven by a mutual passion for its timeless stories and architectural marvels, converged in a way we had never imagined.

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