Siena Cathedral: when is it open and what should you see in 2026?

Siena Cathedral, dedicated to Santa Maria Assunta, is open daily for most of the year, though the 2026 hours change with the season: from 1 April to 31 October the Cathedral is open 10:00 to 19:00, with shorter hours in winter. Entry always requires the OPA SI Pass, the combined ticket from the Opera della Metropolitana that also covers the Piccolomini Library, the Cathedral Museum, the Crypt and the Baptistery.

If you’ve come from abroad, a word on names: Italians call it the Duomo, which simply means cathedral, not a reference to a dome. The building itself is Gothic, built from black and white striped marble that stands for the two colours of Siena’s civic coat of arms.

When is Siena Cathedral open in 2026?

The complex’s hours change several times a year. These are the ones published by the Opera della Metropolitana di Siena for 2026:

Last entry is always thirty minutes before closing, and religious services can change the hours without notice. Before you travel, it’s worth checking the Opera della Metropolitana’s own website.

What does the ticket to the cathedral complex include?

The OPA SI Pass opens five sites within the same complex: the Cathedral with the Piccolomini Library, the Cathedral Museum, the view from the Facciatone, the Crypt and the Baptistery. The Piccolomini Library, inside the Cathedral, was built in 1492 to house the books of Cardinal Francesco Piccolomini, later Pope Pius III. Its walls are frescoed by Pinturicchio with scenes from the life of another Piccolomini, Pope Pius II. The Cathedral Museum holds Duccio di Buoninsegna’s Maestà, one of the most important works of 14th-century Sienese painting. From the Facciatone, the unfinished wall of a planned medieval expansion of the Cathedral halted by the Black Death of 1348, the view reaches out to the hills beyond the city walls.

The Cathedral floor, inlaid with 56 marble biblical and allegorical scenes, is only fully uncovered for a few weeks a year. The rest of the time it stays under protective panels to limit wear. The exact 2026 uncovering dates are published on the Opera della Metropolitana’s website, and the ticket costs a little more on the days when the floor is on show.

What is the Porta del Cielo and how do you book it?

The Porta del Cielo (“Gate of Heaven”) is a guided route across the Cathedral’s roof and dome, looking down over the building’s interior and out across the city. It isn’t included in the basic OPA SI Pass: you need a separate ticket, bought at the ticket office inside the Santa Maria della Scala museum complex. Groups are capped, at around eighteen people per slot, with fixed departure times, so arrive at the meeting point at least five minutes early.

How much time do you need to see the whole complex?

The Cathedral alone, with its inlaid marble floor, takes about forty minutes. For the full route, with the Piccolomini Library, Cathedral Museum, Facciatone, Crypt and Baptistery, allow at least two hours, plus another hour if you also book the Porta del Cielo. The Baptistery, behind the apse, and the Crypt, below the Cathedral’s floor, are both reached from outside: you don’t need to go back into the Cathedral to see them.

How do you get to the Cathedral and where do you park?

The Cathedral stands at the highest point of the historic centre, a short walk from Piazza del Campo (the shell-shaped square where the Palio horse race is run). The square itself is lined by the Palazzo Pubblico and the Torre del Mangia, two more classic stops on any visit to Siena. From the villa, on Via Quinto Settano, central Siena is a 15-minute drive: the simplest option is to leave the car in the villa’s own free car park, inside the grounds, then walk up into the centre. Guests arriving by train will find Siena station 5 minutes from the villa.

For the drive from the villa and for private airport transfers, the How to reach us page sets out the directions step by step.

Where should you stay for an easy visit to the Cathedral?

Villa L’Avvenire is a 19th-century villa with a 9,500 square metre park and a pool, with eleven rooms and suites from 21 to 180 square metres, a 15-minute drive from the Cathedral and the rest of the historic centre. Booking through the official website gets you the lowest available rate, a 10% discount, breakfast included and free cancellation up to ten days before arrival, useful if the Cathedral’s hours or the weather change your plans at the last minute.

The rooms and suites are described on the Rooms and suites page; in the evening, the villa’s restaurant is open from 19:00 to 22:00, closed on Mondays.