RomeItaly.guide
  • About us
  • Where to Stay
    • Near the Colosseum
    • Near Termini Station
    • Hotels with Views
  • Visiting Vatican
    • Sistine Chapel
    • Vatican Museums
    • St Peter’s Basilica
    • St Peter’s Dome
  • Fountains & Squares
    • Altar of the Fatherland
    • Four Rivers Fountain
    • Piazza Navona
    • Spanish Steps
    • Turtle Fountain
    • Trevi Fountain
  • Parks & Gardens
    • Knights of Malta Keyhole
    • Orange Garden
    • Rose Garden
    • Villa Borghese
    • Umbrella Pine Trees
  • Museums & Galleries
    • Ara Pacis Augustae
    • Borghese Gallery
    • Palazzo Farnese
  • How to Get
    • Fiumicino Airport ➡️ Rome
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 AD.

The Pope once ruled the Papal States, which included most of Italy. Catholic popes tried to stop Italy from becoming a single country because they feared losing 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 20 September 1870, Italian troops invaded and Rome became the capital of the new kingdom. In 1929, Benito Mussolini signed an agreement with the Holy See, known as the Lateran Treaty, which established the Vatican State.

Author: Kate Zusmann

Kate Zusmann

I’ve lived in the Eternal City for the past 12 years. They say every corner of Rome holds a story, and I’m here to share some of the most fascinating historical facts and local legends.

Dive Deeper into Rome's Stories

Vatican Museums Visitor Guide

990083 travellers read

The Vatican Museums

Rome Italy Tourist Attractions

27914 travellers read

Top 30 Attractions in Rome

Beste Hotels in Rom mit Aussicht

9835 travellers read

Best Hotels with Views in Rome

How to Book Vatican Museums & Sistine Chapel Tickets

14096 travellers read

How to Book Vatican Museums & Sistine Chapel Tickets

What to wear to the Colosseum?

11761 travellers read

What to Wear to the Colosseum?

Eternal City – Why Is Rome Called This?

3666 travellers read

Eternal City – Why Is Rome Called This?

Where is The Sistine Chapel in Rome?

4252 travellers read

Where to Buy Sistine Chapel Tickets?

The Colosseum in Rome

25494 travellers read

Why the Colosseum is Important?

How many Colosseums are there in Italy?

7449 travellers read

How many Colosseums are there in Italy?

Show more

About us

About us ROME.US Authors Kate Zusmann and Artur Jakucewicz
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.

Explore Rome

  • Best Hotels Near Termini Station in Rome

  • Vatican Museums Visitor Guide

    The Vatican Museums

  • Der Tiber in Rom

    The Tiber River in Rome

  • The Colosseum in Rome

    Colosseum

  • Chariot racing in the Circus Maximus Ancient Rome

    Circus Maximus

RomeItaly.guide

This website uses cookies. For more info read the cookies policy

RomeItaly.guide © 2026. Created with love by Roman experts and guides.

  • American English