Monaco Cathedral and the tombs of Grace Kelly and Rainier III

Nearly everyone walks into Monaco Cathedral for one reason, Grace Kelly’s tomb, and walks out five minutes later. I think that’s a shame, because fifteen well-spent minutes get you the tomb, an altarpiece from 1500 and the remains of the medieval church it was built over. Here’s where everything is and how to slot it in with the rest of the Rock.

Where is Grace Kelly buried?

Right here, in Our Lady Immaculate Cathedral at the top of the Rock. The parish puts it simply, saying the princes and princesses of Monaco rest around the high altar, with the bishops beside them. Among those tombs are Princess Grace’s and Prince Rainier III’s, and that’s what most people come to see.

You don’t need to go out of your way to find them. Walk up the nave towards the altar and follow the walkway that curves round behind it. Grace’s slab carries her name in Latin, Gratia Patricia. What moves me most about this place is that the wedding and the grave are in the same building. Rainier III and Grace Kelly married here in 1956, and the whole arc of her life in Monaco is laid out in my Grace Kelly trail through Monaco.

Entry is free every day, except during services. I’d bear that in mind first thing and on Sundays, because if Mass is on you can attend it, but not stroll behind the altar while it’s being said.

Younger than it looks

The white stone from La Turbie and the Romanesque-Byzantine style fool plenty of people. The building you see isn’t medieval. The foundation stone was blessed on 6 January 1875, the diocese was created on 15 March 1887 and the cathedral was consecrated on 11 June 1911. Prince Charles III wanted it built, and since 1981 it has been the seat of an archdiocese. It holds more than a thousand people, which explains its size in such a small country.

The old part is underneath and around it. In 1247 Pope Innocent IV authorised a church on the Rock dedicated to St Nicholas, and the present cathedral went up on top of it. That’s why some visitors still search for it as St Nicholas Cathedral. Look along the left side of the building, as far as the Porte Saint-Nicolas, and you’ll see capitals, balustrades and columns from that church. It’s the sort of detail that makes me look at a building twice, and the other churches in Monaco have a few of their own.

It’s also the church of a living parish with traditions of its own. The most striking is the Good Friday procession around the Rock, linked to the Brotherhood of Mercy, founded in 1639. Its home is the Baroque Chapel of Mercy in Monaco, on Place de la Mairie a few streets away. If you’re travelling over Easter, I’d ask the tourist office for that year’s route.

Beyond the tombs, what I’d stop for

The Louis Bréa altarpiece, from 1500, is my favourite. It came from the earlier church and stayed on in the new one, so you’re looking at a piece four centuries older than the walls around it. Next to it are the white Carrara marble high altar and the bishop’s throne. I’d take in the group first from the nave, with some distance, then walk round the altar to the tombs.

The other thing worth your attention is above the door. The grand organ was finished in December 2011 over the narthex and has 4 keyboards, 79 stops and nearly 7,000 pipes. The principal organist is Olivier Vernet. If you catch a rehearsal or a Mass, don’t hurry off.

Sundays with the Petits Chanteurs

If you can pick your day, I’d go on a Sunday morning between September and June. The cathedral’s choir school, founded in 1904, sings Mass on those Sundays, and according to its website it did so at 10:30 during the 2025/2026 season. VisitMonaco says 10:00, but I trust whoever publishes the calendar. In July the choir is on tour and in August on holiday, so there’s no sung Mass in summer.

There’s a catch. When I checked the sources, the 2026/2027 season calendar still wasn’t out, so I can’t tell you which Sundays they sing from September 2026. The two big fixed dates in the year are 27 January, the feast of St Devota, and 19 November, Monaco National Day, both with a pontifical Mass.

Dress, timing and fitting it into the Rock

The rule is clear. Shoulders covered, no miniskirts or very short shorts, and knee-length shorts are fine. A self-guided visit takes about fifteen minutes according to VisitMonaco, and I’d give it twenty if you want to see the altarpiece and the St Nicholas remains properly.

It stands at 8 rue Émile de Loth, five minutes’ walk from the Prince’s Palace of Monaco, and fits perfectly after the 11:55 changing of the guard. On the way out, the Saint-Martin Gardens, the oldest public garden in the country, lead downhill to the Oceanographic Museum, about twenty minutes at an easy pace. On the same street, at number 2, is the Museum of Old Monaco, free and closed on Mondays. The rest of the quarter is set out in my guide to Monaco-Ville, and how to get up without a car in getting around Monaco.