Piranesi's engraving of St Peter's Basilica interior — the tour ends beneath the crossing, at the traditional site of the apostle's tomb
Interior of St Peter’s Basilica, 18th-century engraving by Giovanni Battista Piranesi. Held at the Library of Congress. Via Wikimedia Commons (public domain).

The Vatican Necropolis is the ancient burial ground several metres below the floor of St Peter’s Basilica. Guided visits run daily, capped at roughly 250 people, in groups of twelve. Booking is genuinely more opaque than any other Vatican experience, and almost every third-party guide you will find describes a process that has changed. Here is what actually works in 2026.

What the tour is

Under the Basilica floor sits a second-century Roman street of pagan and early-Christian mausolea. In the middle of that street, directly beneath the Papal Altar and Bernini’s Baldachin twenty metres above, is a small aedicula known as the Trophy of Gaius — the shrine early Christians already venerated as the tomb of the apostle Peter by around AD 160. Twentieth-century excavations under Pius XII (1940-1949) reached this shrine; on 26 June 1968, Paul VI announced that relics recovered from an adjacent niche in the “Graffiti Wall” had been identified as Peter’s, based on the epigrapher Margherita Guarducci’s work.

The Scavi tour walks you along that Roman street, past the pagan mausolea, past the Graffiti Wall, and up to the shrine itself. Total duration: about sixty minutes. Group size: twelve, maximum. Guides are staff of the Fabbrica di San Pietro, not third-party operators.

How to book, in 2026

The primary booking channel is the Fabbrica di San Pietro’s online form at visite.basilicasanpietro.va. This replaced the legacy scavi.va email-first process; the older email address (scavi@fsp.va) is still cited by dozens of guide sites and appears in older Vatican communications, but the current portal is the reliable route.

Fill in language preference, requested date and time, number of participants, a group representative’s name and email and phone, and full names plus ticket type of each participant. Payment is by credit card only. If you are approved, the payment link is time-limited; recent guidance is a five-day window (older sources cited ten), so check the exact deadline in your confirmation email.

Acknowledgement of the request is usually quick. Full confirmation with the payment link can take weeks, and in peak season (April to October) that wait extends into months. Recent 2026 requests report anywhere from six weeks to fourteen weeks between initial request and confirmation. Plan on two to six months of lead time if you want a specific date; longer for July or the days around a canonisation.

What it costs

Current 2026 fees on the portal:

You will still see €13 quoted on older third-party pages. That was the pre-portal rate and is no longer what the current booking system charges. Anyone advertising a “Scavi ticket” for €13 in 2026 is either working from old information or selling you something other than the official Fabbrica visit.

Who cannot go, and what to know before you book

Three restrictions matter:

Dress code is the same as the Basilica: shoulders and knees covered, no shorts or short skirts, hats off inside. Photography is forbidden entirely once you descend into the necropolis. No exceptions, and staff enforce it more strictly here than in the Basilica proper because the confined space of the ancient street makes flash and phone-held-aloft immediately visible.

Languages and slot availability

The tour runs in a rotating multilingual schedule. Official languages on the portal include Italian, English, Spanish, French, German, Portuguese, Dutch, Polish, Hungarian, and Japanese; smaller-audience languages (Czech, Romanian, Russian, Ukrainian, Slovak, LIS) are also selectable at booking time subject to guide availability. English slots run multiple times per day but not at every time slot. The portal’s live calendar shows exactly what is bookable on which day.

The exit into the Basilica

Here is the detail that most guides skip and that changes the practical value of the tour: the Scavi tour ends inside the Vatican Grottoes, and you exit up the steps directly into St Peter’s Basilica. You do not queue at the piazza security check on the way out. If your booking is on a day you also want to see the Basilica interior, the Scavi tour is your route in — you have already cleared the security check at the Arco delle Campane (Swiss Guard gate on the left-hand colonnade), the tour delivers you inside the Basilica, and you can walk the aisles, climb the Dome, or head straight to the Baldachin from where you emerged.

Which means the honest way to plan a Scavi-day is: book the earliest slot the portal offers, aim to be at the Arco delle Campane fifteen minutes before your slot time, do the tour, emerge into the Basilica by mid-morning, and use the rest of the morning for the Baldachin, then the Pietà, then the Dome climb, without a second security queue.

What the tour is not

Two clarifications the Fabbrica’s own FAQ makes and worth naming explicitly:

If the online portal is booked out

If the visite.basilicasanpietro.va calendar shows no availability on your dates, three fallbacks exist:

Our St Peter’s Tomb tickets and tours page tracks the current booking mechanics for the Scavi tour and links to the Fabbrica portal. If you are planning the Scavi as part of a broader Basilica morning, our half-day at St Peter’s post covers the Dome climb, Baldachin, Pietà, and Grottoes sequence that pairs naturally with a Scavi exit into the Basilica interior.