If you’re visiting Siena Cathedral, the Crypt is the add-on that changes the experience. It’s where you’ll see 13th-century frescoes up close—paintings that stayed out of view for around 700 years.
If that sounds like something you’d regret missing, don’t book a cathedral-only entry. Choose the OPA SI PASS that includes the wider Duomo complex, so you can add the Crypt without scrambling on the day.
What is the Siena Cathedral Crypt?
The Crypt is a below-ground area of the Siena Cathedral complex. It was brought back into view in 1999 during work carried out under the Cathedral, after having been filled in over time (starting around the 15th century, with more added later).
Today, it’s visited as a short stop on the Duomo route, mainly for its fresco cycle and the monument’s lower-level spaces.
To build your itinerary, explore what to see at Siena Cathedral
What to see inside the Crypt
The fresco cycle (how to follow it)
The main feature is a fresco cycle painted in the second half of the 13th century. The decorated surface covers about 180 square meters, spanning the walls and pillars, and it depicts about 45 scenes from the Old and New Testaments—so there’s a lot to take in even if your visit is short.
To follow it in order:
- Old Testament scenes sit on the upper register
- New Testament scenes sit on the lower register
As you move along, look out for how episodes are separated: geometric borders and framing details help guide your eye from one panel to the next.
The “don’t miss” scenes (quick checklist)
If you have limited time, use these scenes as your “anchor points” for the visit. They’re also the easiest to spot on many Crypt maps:
- The Annunciation (1)
- The Nativity of Jesus (2)
- Rest during the Flight into Egypt (3)
- The Deposition from the Cross (4)
These are also the easiest reference points if you’re using a map inside the Crypt.
Painted architecture (look beyond the walls)
Don’t just scan the “main” panels. The Crypt also shows decoration across:
- columns and structural elements
- painted motifs around architectural features
- patterned borders that frame scenes
It helps you see how medieval interiors were designed as complete environments rather than single artworks on a wall.
Must Know: How To Reach Siena Cathedral
Why the Crypt is worth adding to your visit
It’s significant for art history
The discovery added major evidence for understanding 13th-century wall painting and the early development of the Sienese school. Even if you’re not an art specialist, it explains why this space matters beyond “nice frescoes.”
It adds building context
The Crypt also supports the “how was the Duomo built?” story. The excavation revealed structural elements and connections that help explain the phases of construction around the Cathedral’s foundations and in the apse area.
Tickets + how to visit the Crypt
Is the Crypt included in tickets?
In most cases, the Crypt is accessed via the Siena Cathedral complex ticket, commonly sold as the OPA SI Pass (or a similar combo ticket).
One thing to be aware of: validity wording can differ by seller (some describe “three consecutive days,” others “three days from first use”). Follow the rule shown on your booking confirmation.
Buy OPA SI PASSOpening hours, entry, and how long it takes
Opening hours (Crypt)
- 8 Jan – 30 Mar 2025: 10:30–17:30
- 31 Mar – 2 Nov 2025: 10:00–19:00
- 3 Nov – 24 Dec 2025: 10:30–17:30
- 26 Dec 2025 – 6 Jan 2026: 10:00–19:00
Entry
- This is where visitors waste time: the Duomo complex spans multiple sites, and not all use the same entrance. The Crypt can have its own access point, so use the official complex map and the instructions on your ticket/voucher.
- Last admission is 30 minutes before closing
How long to plan
- Quick visit: 15–25 minutes
- Standard visit: 25–40 minutes
- Slow visit: 45–60 minutes
Know helpful Tips for a memorable visit to Siena Cathedral
FAQs
Here are some of the queries that visitors have regarding the Siena Cathedral Crypt:
Is the Siena Cathedral Crypt worth it?
Yes, if you like medieval painting or want one add-on beyond the Cathedral interior.
How long does the Crypt take?
Most visitors spend 25–40 minutes.
Is the Crypt included in the OPA SI Pass?
Usually yes, but always confirm inclusions on the ticket you’re buying.
Do I need a guide?
No. It works self-guided. A guide can help if you want deeper context.
Can I visit with kids?
Yes, for most families—just be ready for stairs and keep it short if needed.
Is it cramped or claustrophobic?
It’s underground. Most people are fine, but if enclosed spaces bother you, plan a quick loop and step out.
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