Basilica Sancti Petri

Basilica Sancti Petri is simply the Latin name for St. Peter’s Basilica, the great church on the west bank of the Tiber in Vatican City. The Italian form is Basilica di San Pietro in Vaticano, and the full title is the Papal Basilica of Saint Peter in the Vatican, according to Wikipedia. If you searched the Latin phrase, you are probably after the history, the tomb, or a practical plan for getting inside.

I’ll cover all three here. This page is part of our St. Peter’s Basilica hub, and the full visitor overview lives on the St. Peter’s Basilica guide.

What Does Basilica Sancti Petri Mean?

Basilica Sancti Petri translates from Latin as “Basilica of Saint Peter”. The Wikipedia entry for the church lists the Latin form next to the Italian name, and it shows up in inscriptions rather than on tickets.

The Latin turns up on the building itself. The official page on the dome records an inscription on the ring at the end of the lantern that begins “s. petri gloriae”, which means “To the glory of Saint Peter”. It was placed there under Pope Clement VIII to commemorate the work of Pope Sixtus V, per the official basilica site.

Latin and Italian both point to the same place. When a ticket, a map or a tour says St. Peter’s Basilica, Basilica di San Pietro or Basilica Sancti Petri, it means one church, with one address: Piazza San Pietro, Vatican City.

Many travelers also ask whether the name covers the whole Vatican. It does not. I explain that difference in the FAQ below, and the short version is that the basilica is one building inside a tiny state.

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Is Basilica Sancti Petri a Cathedral or a Pontifical Basilica?

Basilica Sancti Petri is a papal basilica, not a cathedral. A pontifical (papal) basilica is one of four top-ranking churches, all of them in Rome, and Wikipedia ranks St. Peter’s second among them, after the Archbasilica of Saint John Lateran.

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The common mistake is calling it “St. Peter’s Cathedral.” A cathedral is the seat of a bishop, and Wikipedia states plainly that St. Peter’s is not one. It is also neither the mother church of the Catholic Church nor the cathedral of the Diocese of Rome. Those titles belong to Saint John Lateran.

Still, it is regarded as one of the holiest Catholic shrines, and it is one of the Seven Pilgrim Churches of Rome. The other major papal basilicas are Saint Mary Major and Saint Paul Outside the Walls. If you are comparing Rome’s big churches, my page on whether Rome has a basilica beyond St. Peter’s lays out the choices.

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Basilica Sancti Petri by the Numbers

Basilica Sancti Petri’s key figures are drawn from Wikidata and show why no other church compares easily. Beside each number I’ve noted what it means for your day.

• Visitors per year: 11,000,000 (2018 figure). Expect crowds and a security line at almost any hour.
• Length: 220 m. The nave is long, so give yourself time to walk it slowly.
• Width: 150 m. The scale is part of the experience, not just the art.
• Height: 136.6 m. The dome rises above the Rome skyline from nearly every viewpoint.
• Inception: 18 April 1506. The date construction began, as Wikipedia also records.
• Architects: Michelangelo, Giuliano da Sangallo, Donato Bramante and Raphael. Several masters shaped the plan, which is why you see both Renaissance and Baroque work.
• Styles: Renaissance and Baroque architecture. Look at the dome for the first and Bernini’s fittings for the second.

Wikipedia adds that the present basilica was completed on 18 November 1626 and is the largest church in the world by interior measure. That is a 120-year build, which explains the many hands.

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Why Is the Basilica Built Over St. Peter’s Tomb?

St. Peter’s tomb is, by Catholic tradition, the reason the basilica stands where it does: the church sits on the burial site of Saint Peter, chief of Jesus’s apostles and the first Bishop of Rome. Wikipedia says his tomb lies directly below the high altar, also called the Altar of the Confession. That is why so many popes, cardinals and bishops are buried here.

The first church on the site was Old St. Peter’s, built in the fourth century by the Roman emperor Constantine the Great. By the 15th century it was aging badly. Pope Nicholas V and then Pope Julius II planned a replacement, and work on the new basilica started in 1506.

The architects changed several times. The main designers were Donato Bramante, Michelangelo and Carlo Maderno, with the square and fittings by Gian Lorenzo Bernini. I like to tell friends this is the building where you can read the whole Renaissance in one walk: Bramante’s central plan, Michelangelo’s dome, Maderno’s longer nave, Bernini’s colonnade.

The official page on the necropolis describes the ancient tombs beneath the central nave, and a path that leads toward the tomb of Peter in the foundations of the original basilica commissioned by Constantine.

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Can You Visit St. Peter’s Tomb?

Visiting St. Peter’s tomb is possible through the Vatican Necropolis, which the official site sells as a separate visit. According to the official basilica website, the necropolis lies under the central nave and holds ancient Roman and early Christian tombs. The route retraces the old path to the tomb of Saint Peter.

This is not part of a normal basilica walk-in. You book it on its own through the official products page. I can’t give you a price, hours or group size, because the brief doesn’t list them, so confirm all of that on the official booking page.

If you only want to see where the tomb sits, you don’t need the necropolis. Stand in the nave and look toward the high altar under Bernini’s Baldachin. The tomb is directly below it, per Wikipedia.

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Saint Peter’s Basilica Visiting Hours and Entry

Saint Peter’s Basilica visiting hours on its Maps profile run from 7 am to 7:10 pm every day of the week. Treat that as a rough guide only, since hours shift on feast days and during papal ceremonies. Confirm the day you plan to go on the official site.

Entering the basilica goes through security in St. Peter’s Square. Even holders of an online ticket must pass those checks, per the official FAQ. The line moves, and an early start helps. As one traveler put it:

“Do not miss this place for a FREE location! This is the most beautiful church I've ever been to. Once your through security and the main doors, you are truly hit by the size and artwork. We got there 645am and already there's a line but got in very quickly. If your just there for free visit, you can see most of it in 40mins. Pay extra for the other locations.”

A listing for the Vatican Museums ticket on GetYourGuide notes that the basilica is free of charge, but access is not guaranteed and may change with crowd control. So plan a buffer, and don’t schedule a hard deadline right after.

For a 40-minute look at the nave, the Pietà and the Baldachin, a plain visit is enough. If you want more depth, you need a guide, a dome ticket or both. Here is how the options compare, using only what the official site and the tour listings state.

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What Should You Wear Inside the Basilica?

The basilica dress code requires covered shoulders and knees. The official dome FAQ states that clothing appropriate for a place of worship is required, and I apply that standard to the whole basilica. A scarf in your bag solves most problems.

Bags are the other trap. For the dome, only small personal bags are permitted, and large backpacks, trolleys and bulky luggage are not allowed. The same FAQ says there is no cloakroom or luggage storage service for that visit. Travel light on basilica day.

If you’re pairing the basilica with the museums on one day, the same clothing rule saves you a turn-back at the first checkpoint. I’d dress for both before leaving the hotel.

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Saint Peter’s Basilica Tickets and Tours Explained

Saint Peter’s Basilica tickets aren’t needed for the church itself, but a booked tour adds a guide and often quicker access. If you are asking where to buy Vatican tickets? the answer depends on whether you want the museums, the basilica or both on the same day.

Most of the listings I reviewed combine the Vatican Museums and the Sistine Chapel with the basilica. Read the fine print. Several state that basilica entry is optional or “if option selected,” and some say the basilica is not guided. Travelers on a few listings say they wished that was clearer upfront.

Here are the three that fit a first visit best:

The first is a museums and Sistine Chapel ticket at $36.21, and it excludes the basilica and the dome. The second is a guided tour at $60.17 with basilica skip-the-line access on selected options. The third is a guided tour at $71.31 with optional dome access by elevator to the terrace. Prices are from the listings and can change, so check them at checkout.

My advice: if you want the story behind the stone, book a guide. If you only want a quiet look at the nave, skip the tour and walk in early. If you can’t decide, which Vatican tickets should you book? is the question our homepage answers side by side.

For a second shortlist, these two include a licensed guide and a basilica option:

Note the meeting points. One begins on Via Plauto 17/A in Borgo Pio, and another says St. Peter’s Square is not the meeting point. Read the voucher twice.

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How Does the Dome Climb Work?

The dome climb takes about one hour on average, and the lift only reaches the terrace. From the inner ring you climb 320 steps to reach the outer ring, per the official dome FAQ. That is a real climb, so decide before you buy.

A dome ticket bought online includes entry to the basilica, to be used 90 minutes before your dome time, plus the Digital Audio Guide. You show a QR code at the entrance. If you don’t get your QR email within 30 minutes of booking, the FAQ says to write to the booking address on the official site.

The structure is worth the effort. The official page on the dome says Michelangelo conceived it and Giacomo della Porta finished it, working with Domenico Fontana from 1588 to 1590, raising the dome in 22 months with 800 labourers. The inner lantern reaches 117 metres, and the cross is over 133 metres high.

Inside, mosaics cover about 3,000 square metres. The frieze at the base carries Matthew 16:18-19 in large blue letters on gold: “You are Peter and on this rock I will build my church.”

“The Papal Basilica of Saint Peter in the Vatican (Italian: Basilica Papale di San Pietro in Vaticano), or simply St.”

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What Else Is Near the Basilica?

Near the basilica, the Vatican Museums are a short walk away, and Maps lists them as open 8 am to 8 pm, Monday through Saturday, and closed on Sunday. That matters if you want to pair them with the basilica, because a Sunday plan will not include the museums.

Other major basilicas are in Rome proper, not in Vatican City: Saint Mary Major and Saint John Lateran, both listed on Maps from 7 am to 6:30 pm. Saint Paul Outside the Walls lies within Italian territory, but Wikipedia notes the Holy See owns it. If you are comparing, read about the basilica in Vatican City first, then the Vatican basilica overview.

Keep one thing in mind. The basilica is a working church. The pope presides at liturgies in the basilica and the square, and the crowds run from 15,000 to over 80,000, per Wikipedia. On those days, access may change, so check the official calendar.

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Plan Your Basilica Sancti Petri Visit

Your Basilica Sancti Petri visit works best with the plan I’d hand a friend. Arrive early, dress with shoulders and knees covered, bring one small bag, and expect a security line in the square. Walk the nave toward the high altar, because Peter’s tomb lies below it.

Then choose your add-on. Pick the dome if you want the view and don’t mind 320 steps. Pick the Necropolis if the tomb is your reason for coming. Pick a guide if you want the Renaissance story told in order. You can compare every ticket type at once on our Vatican tickets page, or browse more on Peter’s Basilica for details.

Prices and hours change, so confirm on the official basilica site before you go. Whichever name you searched, Basilica Sancti Petri, St. Peter’s or San Pietro, it is the same church, and it is worth the early alarm.

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