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Cattedrale di San Pietro

Bologna's cathedral, and the tower-within-a-tower almost nobody climbs

A 10th-century tower inside a 13th • la Nonna, the great bell • red roofs to San Petronio and the Due Torri

Climb the Campanile Get Early Access

🏛️ Essential Visitor Information

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Via dell'Indipendenza

Bologna's cathedral, a block off Piazza Maggiore

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Cathedral: Free

The nave open daily, no ticket

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Tower: By Offering

A small donation on climb days, crypt included

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Climb Days: Check First

Usually weekends, opened by volunteers

🧭 The Cathedral Everyone Walks Past

Almost everyone in Bologna is heading somewhere else when they pass San Pietro. The crowds pour down Via dell'Indipendenza toward Piazza Maggiore, and the city's actual cathedral, the seat of its archbishop, slips by on the left barely noticed. Step inside and it is calm, free, and grander than its plain front suggests, rebuilt in the 1740s with a soaring nave and a quiet crypt below. But the real reason to stop is the bell tower beside it, one of the best-kept secrets in a city full of towers. On the days it opens you can climb it, and most visitors never know it is there.

⛪ Not the Church on the Piazza

First, the thing that confuses everyone. San Pietro is not San Petronio. San Pietro is the cathedral, the Duomo, standing a block north of Piazza Maggiore on Via dell'Indipendenza. San Petronio is the enormous basilica with the half-finished brick front that fills one side of the piazza itself. Two different churches, two different saints, a five-minute walk apart. It is San Pietro, the cathedral, whose campanile you climb, and from the top you can look back and see San Petronio's great bulk across the rooftops, which is the easiest way to keep the two straight in your head.

🗼 A Tower Inside a Tower

The campanile is stranger than it looks. What you see from the street is a square 13th-century tower about 70 metres tall, but it was built straight over an older one, and the earlier 10th-century tower still stands sealed inside it. Climb up and you meet the join: partway through the ascent the round brick shaft of the older tower rises through the middle of the newer one, a tower wearing a tower. The cathedral's own sign puts it plainly, two bell towers, one inside the other. It is the kind of detail that turns a staircase into a discovery.

🔔 La Nonna and the Bologna Bells

At the top hang some of the most famous bells in Bologna. The largest, cast in 1594 and weighing over three tons, is known affectionately as la Nonna, the grandmother; her clapper alone weighs as much as a grown man. Bologna rings its bells in a rare full-circle style, swinging them a complete 360 degrees, a demanding tradition kept alive by the Unione Campanari Bolognesi. These were the bells that in 1933 became the first in the world broadcast live by radio, a moment a marble tablet in the tower still records. Time your climb for a feast day and you may hear la Nonna turn.

THE ASCENT

A Tower Inside a Tower

The way up winds through warm brick and past the strangest thing in the building: the older 10th-century tower, sealed whole inside the one you are climbing.

Carved stone relief showing the two bell towers of San Pietro, one inside the other. — **Two Towers, One Campanile**A carved relief by the stairs lays the puzzle out: two towers, the older one sealed inside the tower you are about to climb.

Warm-lit brick archway and worn stone staircase inside the San Pietro bell tower. — **The Way Up**The climb threads through warm brick passages and low arches, worn smooth by centuries of bell-ringers.

Narrow cylindrical brick shaft of the encased 10th-century tower lit from above. — **The Older Tower**Partway up you meet it: the round brick shaft of the 10th-century tower, rising through the middle of the newer one.

Arched stone window opening high in the bell tower framing a distant Bologna tower. — **A First Look Out**The stairwell's openings give the first glimpses of the city, a distant tower framed in stone as you gain height.

THE BELLS

La Nonna and Her Sisters

At the top hang some of the most famous bells in Bologna, rung full-circle in a tradition centuries old, with the great grandmother bell at their heart.

The great bronze bell of San Pietro, known as la Nonna, seen from below. — **La Nonna, the Great Bell**Cast in 1594 and weighing over three tons, the bell Bolognesi call the grandmother.

Bronze bell mounted on a heavy wooden headstock beam in the bell chamber. — **Rigged to Swing**Each bell hangs from a massive timber headstock so it can turn a full circle in the old Bolognese style.

Vaulted brick ceiling of the bell chamber with a circular ring of lamps. — **Under the Vault**The bell chamber's brick vault, ringed with lamps that light the last stage of the climb.

Carved marble inscription from 1933 commemorating a radio broadcast of the Bologna bells. — **A Marble Record**A 1933 tablet marks the year these bells became the first anywhere to be broadcast live by radio.

THE VIEW

Red Roofs and the Old City

Then the reason to climb at all: the whole terracotta city opening out to San Petronio and Piazza Maggiore, Torre Azzoguidi close at hand, the leaning Garisenda on the skyline, and the far hill of San Luca.

Panorama of Bologna's rooftops toward Piazza Maggiore and the basilica of San Petronio. — **Over Piazza Maggiore**The rooftops sweep south to Piazza Maggiore and the great brick bulk of San Petronio, the basilica this church is so often confused with, with the piazza's clock tower to the right.

Torre Azzoguidi beside the cathedral, the leaning Torre Garisenda on the distant skyline. — **Torre Azzoguidi**Torre Azzoguidi rises on Via Altabella right beside the cathedral, and past it the leaning Garisenda, one of Bologna's two famous towers, stands on the distant skyline.

Bologna rooftops and a medieval tower framed by a stone arch opening in the bell tower. — **Framed by the Tower**The campanile's own stone arch makes a frame of the city, the rooftops and towers of the old centre caught beyond the worn brick.

Distant hill of the San Luca sanctuary seen beyond Bologna from the bell tower. — **Out to San Luca**On a clear day the portico-laced hill of San Luca closes the view to the southwest.

Vertiginous downward view of a Bologna street and rooftops from the bell tower. — **Straight Down**Lean toward an opening and the street drops away below the campanile in a rush of red roofs.

Live Prices & Availability

Where to Stay Nearby

🛏️ Stay by the Cathedral

Base yourself along Via dell'Indipendenza or around Piazza Maggiore and the whole medieval core is on foot: the cathedral and its tower, San Petronio, the endless porticoes, and the Due Torri all within a few minutes' walk. The arcaded streets between the station and the piazza hold characterful small hotels right in the heart of the old city.

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🤫 Hidden Secrets

The climb usually runs on weekends, opened by local volunteers, so check the current openings before you come; a small offering gets you the tower and the crypt
You are climbing a 10th-century tower sealed inside a 13th-century one; watch for the round brick shaft of the older tower rising through the middle as you go up

📸 Photographer's Notes

Late afternoon warms the red roofs; the south and east openings look over Piazza Maggiore to San Petronio and out to the Due Torri on the skyline
It is a working bell tower with narrow openings and a real staircase, so a phone or a small lens beats anything bulky on the climb

Frequently Asked Questions

Is this the same as San Petronio?

No, and it is the most common mix-up in Bologna. San Pietro is the cathedral, the Duomo, on Via dell'Indipendenza a block north of Piazza Maggiore. San Petronio is the huge basilica on the piazza itself, a different church and a different saint. The bell tower you climb belongs to San Pietro, the cathedral.

Can you climb the bell tower?

Yes, on the days it opens. Access is usually on weekends and run by volunteers, for a small offering that also covers the crypt. The openings change through the year, including some summer evenings, so check the current times and how to book before you go rather than relying on a fixed schedule.

What is the tower-within-a-tower?

The campanile is two towers in one. A 10th-century tower stands sealed inside the taller 13th-century tower you see from the street, which rises about 70 metres. On the climb you pass the round brick shaft of the older tower where it runs up through the newer one.

What is la Nonna?

La Nonna, the grandmother, is the great bell of San Pietro, cast in 1594 and weighing over three tons. It is the largest bell still rung in the traditional Bolognese full-circle style, in which the bells swing a complete 360 degrees, a tradition kept alive by the city's bell-masters.

Is the climb worth it?

Very much, if you catch it open. The view from the top is one of the best in Bologna, straight over the red roofs to San Petronio and Piazza Maggiore, with Torre Azzoguidi close at hand and the leaning Garisenda on the skyline beyond, and on a clear day the hill of San Luca. Add the tower-within-a-tower and the famous bells and it is a genuine hidden gem.

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