Apostolic Palace historical timeline

Last updated on October 5, 2026

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A palace that already existed when someone first thought to fortify it, turned into a residence by one pope's choice of floor.

Chronology

Before the thirteenth century — a palace nucleus already stands on the site. We know this only because of what was later built to protect it. Structural impact: the core the rest grows from. What you see today: nothing directly — but it is the reason the plan is not regular.
Thirteenth century — a tower is built to protect that pre-existing nucleus. The Vatican Museums attribute it to Innocent III, pope 1198–1216, while in the same sentence glossing him as the fourth pontiff of that name, 1243–1254. Structural impact: a defensive tower embedded in the palace. What you see today: the shell that holds the Niccoline Chapel.
1447–1455 — Nicholas V, Tommaso Parentucelli, orders his chapel built into the last two floors of that tower. Structural impact: a medieval defensive structure converted to private devotional use. What you see today: the Niccoline Chapel, in the heart of the palace.
February–March 1448 — two payments assign the chapel's decoration to the Dominican Fra Giovanni da Fiesole, Beato Angelico (c.1395–1455). Structural impact: none. What you see today: what the Museums call one of the capital works of the Italian fifteenth century, dated by accounting rather than by style.
On the death of Innocent VIII — Rodrigo de Borja y Doms, italianised as Borgia, is elected pope and takes the name Alexander VI. Structural impact: the apartment that carries his name. What you see today: the Borgia Apartment, among the Vatican Museums' collections.
1503–1513 — Julius II della Rovere chooses the apartment on the second floor as his own residence, and his successors use it too. Structural impact: the palace acquires a settled papal residence on a known floor. What you see today: the four Raphael Rooms.
1508–1524 — Raphael and his pupils carry out the painted decoration of those rooms. Structural impact: none. What you see today: the four rooms, painted over sixteen years and by more than one hand.
Later — the Apartment of Julius II and Leo X develops in the spaces beside the Niccoline Chapel, near the Loggias of Raphael. Structural impact: the palace's princely quarters consolidate around the old tower. What you see today: why the chapel sits where it does, a short step from both.
Standing arrangement — the Prefecture of the Papal Household takes responsibility for the internal organisation of the Papal Household, for papal ceremonies apart from their strictly liturgical aspect, for the order of precedence, for the services of the antechamber and for the public, special and private audiences. Headed by a Prefect and a Regent on five-year terms. Structural impact: none. What you see today: who controls access to the inhabited half.
2025 — Leo XIV becomes pope. Structural impact: none. What you see today: the reason older descriptions of this palace name the wrong occupant. Pope Francis, who reigned from 2013 to 2025, chose to live in the Santa Marta residence rather than the palace apartment.

Verified against Musei Vaticani, October 2026.

External resources

Sources & verification Covers the sourced claims on this page.

Checked against Musei Vaticani — The Vatican Museums record that the Niccoline Chapel stands in the heart of the Apostolic Palace, a short step from the Loggias of Raphael and from the spaces in which the Apartment of Julius II and Leo X would later develop, that it owes its name to Pope Nicholas V, Tommaso Parentucelli, pope from 1447 to 1455, who ordered its construction to occupy the last two floors of a thirteenth-century tower built to protect a palace nucleus that already existed, and that the page attributes that tower both to Innocent III, given as pope from 1198 to 1216, and in the same sentence to the fourth pontiff of that name, given as 1243 to 1254, The Vatican Museums record that the sumptuous decoration of the Niccoline Chapel is assigned by two payments of February and March 1448 to the Dominican Fra Giovanni da Fiesole, known as Beato Angelico and dated about 1395 to 1455, and that it is one of the capital works of the Italian fifteenth century and probably the summit of what has been called the Florentine painter's Christian Humanism, The Vatican Museums record that the four rooms known as Raphael's formed part of the apartment situated on the second floor of the Papal Palace chosen by Julius II della Rovere, pope from 1503 to 1513, as his own residence and used also by his successors, and that the painted decoration was carried out by Raphael and his pupils between 1508 and 1524, The Vatican Museums record that the Spaniard Rodrigo de Borja y Doms, italianised as Borgia, was elected pope on the death of Innocent VIII and took the name Alexander VI, and they hold the Borgia Apartment among their collections (October 2026).
Checked against The Holy See — The Holy See states that the Prefecture of the Papal Household is responsible for the internal organisation of the Papal Household and supervises whatever concerns the conduct and service of all who make up the Papal Chapel and the Papal Family, that it sees to the planning and execution of papal ceremonies apart from their strictly liturgical aspect and determines the order of precedence, that it coordinates the services of the antechamber and organises the public, special and private audiences of the Roman Pontiff and the visits of individual persons, and that it is headed by a Prefect assisted by the Regent, both appointed by the Roman Pontiff for a term of five years, The Holy See publishes the acts of the reigning pope, Leo XIV, under his own name on vatican.va (October 2026).

Apostolic Palace historical timeline

Chronology

External resources

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