Lentorama 2026: Hic es: aedificia Vaticani 

Day 38 - Apostolic Palace

Once again the home of the pope, the Apostolic Palace is actually a collection of buildings, some of which we've already discussed (like the Vatican Museums). There's been a papal palace going back to the fifth century and Pope Symmachus, who built a palace close to old St. Peter's (prior to that popes lived in the Lateran Palace).

After the Avignon papacy the papal palace had fallen into disrepair, and the Lateran Palace had suffered two significant fires. In 1447 Nicholas V knocked down the old palace (built by Eugene III in the 12th century) and started construction on the current one, though the palace as we'd recognize it today was mostly shaped by Sixtus V (with the building sometimes referred to formally as the Palace of Sixtus V).

The palace complex has a number of notable artistic areas, including:

* The Borgia Apartments, a suite of rooms created and designed for Alexander VI, one of the Borgia popes. 

* The Raphael Rooms, originally intended as an apartment for Julius II, decorated with a number of frescoes by Raphael and his team.

* Clementine Hall, built by Clement VIII to honor Clement I, also notably decorated with frescoes

* The current papal apartments, located on the top floor of the palace, home to all popes (save Francis) since 1870

* The Sistine Chapel... which I'll talk about tomorrow.

 Lentorama 2026: Hic es: aedificia Vaticani 

Day 37 - Apostolic Vatican Archive bunker, Cortile della Pigna

The Apostolic Vatican Archive (once known as the Secret Archive) is located off of the Cortile del Belvedere, next to the Vatican Library. In operation since 1612, the archive holds many of the documents related to the various popes and official acts of the Holy See.

As you can imagine, the collection built up over time. More space was needed to hold the archive, ideally space that met modern archival standards rather than something built in the 17th century. To that end Paul VI ordered the construction of two vaults to hold archived material, which were inaugurated by John Paul II in 1980.

As you might have guessed from the word 'bunker,' this is one building that you are not going to see in the Vatican skyline. Instead, it is located below the courtyard between the Vatican Museums and the library, named for the second century AD bronze pine cone that stands in it. The bunker has a volume of over a million cubic feet, and has (if I did the conversion right) over 26 linear miles of shelf space (the website says 43,000 meters if you want to do the math).

Lentorama 2026: Hic es: aedificia Vaticani 

Day 36: Leonine Wall

In 846, Arab raiders in Rome sacked the original St. Peter's Basilica. It, like much of the territory that today makes up the Vatican city state, was outside of Rome's protective walls.

In order to prevent any future sacking, Leo IV decided to enclose St. Peter's and the surrounding area in its own wall, which he built between 848 and 852 (Leo III had previously started a wall, but it faced several delays and was largely dismantled by locals who wanted to use the stone for their own buildings).

Today, there are still bits of the wall standing, most notably in the Vatican gardens by the Vatican Radio transmitter. These parts of the wall are anchored on the Torre San Giovanni, which as previously noted was added later to bulk up Vatican defenses.

  Lentorama 2026: Hic es: aedificia Vaticani 

Day 35: Sacristy, St. Peter's Basilica

Like I said, more on this, but not much more.

The current sacristy was the idea of Pope Pius VI, who laid its cornerstone in 1776, and saw it inaugurated in 1784. It stands on the place of the old sacristy, though some additional buildings were demolished so architect Carlo Marchionni could build the new one at an appropriately monumental scale.

The sacristy is connected to the basilica by two covered walkways, one enters into a side chapel while the other is near the tomb of Pius VIII. 

  Lentorama 2026: Hic es: aedificia Vaticani

Day 34: Biblioteca Apostolica Vaticana, Cortile Belvedere

The origins of the Apostolic Library go back to the 4th century, when there is documentary evidence of  a combined library and archive. But there wasn't a specific, permanent collection until the 15th century, when Pope Nicholas V made the decision to create a formal library and Sixtus IV saw the plan through. Starting with a collection of 1200 manuscripts in Latin, Greek, and Hebrew, the collection would grow over time, with a collection today of over 1.1 million books and 75,000 codices.

The library is still located in its original building, which is now considered part of the Apostolic Palace complex. Its most notable contribution to Vatican architecture was its bisecting of the Belvedere Courtyard, created by Donato Bramante in the early 16th century. The courtyard was originally intended as one long enclosed space running from the Apostolic Palace to the Villa Belvedere. But a new wing for the library ordered by Sixtus V saw the courtyard cut into two pieces (now three, with the Pigna Courtyard, a small library courtyard, and the remaining Belvedere Courtyard).

While I feel bad for Bramante that his original vision was permanently altered, he at least didn't live to see it happen. It also could be worse; he could have lived to see that, today, his courtyard is used as a parking lot.

 Lentorama 2026: Hic es: aedificia Vaticani

Day 33: Palazzo della Canonico

I still don't know much about this building, which is located right next to the sacristy of St. Peter's (more, but maybe not much more, about that later). It doesn't help that there are other buildings by this name in Italy, most notably (based on the number of hits) in Pisa.

The best that I can tell is that this was built for the canons of the basilica by Pius VI. which would put its construction in the last quarter of the 18th century. Other than use by the canons, it was also the home of the basilica's archives for a time (most of the archive was relocated to the Vatican Library in 1940).

More recently, the building became home to the School of Arts and Crafts of the Fabric of Saint Peter, which will teach skills like masonry, plastering, and carpentry to students who will then use their skills to maintain the basilica (the mission of the Fabric). 

One map I've been consulting for this suggests that the building is also the home to the Treasury of St. Peter, a museum of historical liturgical artifacts used in earlier iterations of the basilica. But the descriptions I've found online make it sound like the museum is housed in the basilica (or the sacristy) itself.

Lentorama 2026: Hic es: aedificia Vaticani

Day 32: Domus Sanctae Marthae, Piazzza Santa Marta

The House of Saint Martha takes its name from Martha of Bethany, sister of Lazarus. The Bible stories with Martha show her as being focused on the duties of the household and towards her guests, as opposed to her sister Mary, who "has chosen what is better" by ignoring those duties and only paying attention to Jesus and his teaching.

Over time, as Martha became venerated, the stories were transformed into positive qualities of common sense, maturity, and care for others. So it's not surprising that when John Paul II decided to build a place where visiting clerics could stay when visiting the Vatican, he chose to name it after Martha. 

The domus was built on the site of the former St. Martha Hospice, built in 1891 by Leo XIII to treat patients of an expected cholera outbreak. When that didn't happen it took in the sick from part of Rome, as well as pilgrims who fell ill. Over time it began to house displaced persons and, increasingly, Vatican staff.

JP2's primary motivation for building the domus, though, was to give cardinals a place to stay during conclaves. Previously they stayed in temporary rooms in the Apostolic Palace, which were lacking in comfort and amenities (as JP2 experienced himself in two conclaves). The five story building, located next to the Palazzo San Carlo and steps from St. Peter's, was completed in 1996. It would be used for a conclave for the first time after John Paul's death.

The domus may be best known as the home for Pope Francis during his tenure in office. He opted to stay in the domus rather than move to the papal apartments as he wanted to live with others rather than in the solitude the apartments would provide. This arrangement is also seen in the movie Conclave, where the recently deceased pope is shown living in the same building that the cardinals inhabit during the vote to replace him.