Welcome to La Mercè, where Barcelona collectively decides that normal life can wait.
Giants on the streets, human towers in the middle of Plaça Sant Jaume, drums echoing through the alleys of the Gothic Quarter and people willingly running around things that are quite literally on fire.

Barcelona’s biggest annual celebration is part festival, part cultural spectacle, and part organized chaos.
For several days, the city is filled with concerts, fireworks, parades, street performances – … and some very old Catalan traditions that look completely surreal if you’ve never seen them before.

And the best part? Most of it is free.

So if you’re going to be in Barcelona in late September, don’t treat La Mercè as just another event you might walk past…. – For a few days, the entire city is THE event.

When is La Mercè 2026?

La Mercè 2026 takes place from September 23 to September 27, with the official feast day falling on Thursday, September 24.

And while September 24 is the big day, it would be a mistake to show up for only one afternoon. The festival goes on for five days, with hundreds of events happening all over Barcelona.

In other words, you don’t really “go to” La Mercè, you just happen to be in Barcelona while La Mercè is happening.

What actually happens at La Mercè?

La Mercè isn’t one event in one location. It is a collection of celebrations across the city at the same time.

There are concerts, street performances, traditional Catalan celebrations, parades, fireworks, food events, exhibitions, and plenty of activities for families. – …this year’s program includes more than 100 concerts spread across different areas and stages, with artists coming from around the world.

So if you aren’t really interested in Catalan culture, don’t worry. You can spend the evening listening to live music by the beach..

Or if concerts aren’t your thing, you can watch a group of people build a human tower several meters into the air.

Or you can stand in a medieval-looking square and watch enormous paper-mâché figures parade past you.

Or, if you have made some questionable life choices, you can join a crowd of people running through a street filled with fireworks.

… I mean, there really is something for everyone.

Get a Taste of Catalan Traditions

Castells: Human Towers

One of the most impressive Catalan traditions you’ll encounter during La Mercè is the castells.

Groups known as castellers work together to build enormous human towers, sometimes reaching several levels high. The really fascinating part isn’t just the height. It is the sheer amount of coordination involved. – Hundreds of people can form the base, while others climb carefully upwards until the smallest members of the group reach the top.

… And yes, watching a tiny child climb to the top of a human tower is every bit as nerve-racking as it sounds.

Correfoc: Fire, Demons and Chaos

The word roughly translates to “fire run”, which is honestly a very accurate description.

People dressed as demons and mythical creatures run through the streets carrying fireworks and sparklers, while drums sound around them and sparks fly in every direction.

You don’t simply watch from a safe distance either…. The whole thing is designed to feel immersive, loud, and slightly chaotic. Don’t turn up in your favorite delicate outfit expecting a peaceful evening of cultural appreciation.

You have been warned.

Giants: The Gegants of Barcelona

La Mercè is also one of the best times to see some of Barcelona’s traditional gegants – …giant paper-mâché figures that are carried through the streets during processions.
The Cavalcada de la Mercè on September 24 is one of the major traditional events, bringing this colourful side of the festival into the streets.

✨Want to experience more? Check out my calendar of festivals and celebrations happening in Barcelona throughout the year HERE

… And yes, there are a LOT of concerts and events at La Mercè

If all of the above sounds a little too traditional for you, don’t worry, La Mercè also turns Barcelona into one huge open-air music festival.

You’ll find something happening in almost every corner of the city. There are stages, concerts and major outdoor events around the beach and throughout the city – … One of the big attractions in 2026 will be the music around Bogatell Beach, where you can listen to live performances with the sea right behind the stage.

• Other main festival locations include Plaça de Catalunya, Plaça Reial, Plaça Sant Jaume, Parc de la Ciutadella, Montjuïc, the Moll de la Fusta, and the streets around the Gothic Quarter

Every year, La Mercè invites a different city to co-host the celebrations and in 2026, that city is Shanghai – so more than 100 artists connected to Shanghai and the Chinese community in Barcelona will participate through music, food, street art, and performances.

Piromusical

And finally, there is the event that ends La Mercè with a spectacular bang.

The Piromusical combines fireworks, music and light into one huge closing show.
It will take place on Sunday, September 27 at 10pm, with the show visible from the city’s waterfront.
Usually it’s around Montjuïc, but the event is moving to Bogatell Beach in 2026 because of construction work around Plaza de España

Is La Mercè worth visiting?

Absolutely.

If you’re already going to be in Barcelona in late September, La Mercè is one of those occasions when you don’t need to spend a fortune on an attraction or book an expensive experience.

The city itself becomes the attraction.

But don’t try to plan every minute – … That is probably the best La Mercè advice you can get. Pick a couple of things you really want to see, like the castellers, the Correfoc, or one of the big concerts
… and leave some room to just simply wander around the city. That’s part of the fun.
Oh, but expect crowds…. Lots of them.

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It’s a nice reminder that Barcelona isn’t only Gaudí, tapas and pretty streets. There is a very strong local culture underneath the tourist-friendly version of the city – … and La Mercè puts it front and centre.

Aaaanyways,

See you at the next one,

Noémi

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