Once a year, at the end of September, Barcelona throws the biggest party of its calendar — and most visitors have never heard of it. La Mercè is the city's festa major, five days of human towers, fire-breathing dragons, giants, and a fireworks finale set to music. If you're in Barcelona in late September 2026, this is the one thing not to miss.
What Is La Mercè?
La Mercè is Barcelona's annual festival in honour of the Mare de Déu de la Mercè (Our Lady of Mercy), one of the city's patron saints. It has been celebrated officially since 1902, and it marks the symbolic end of summer and the arrival of autumn.
But forget the religious origins for a moment — today, La Mercè is above all a giant, joyful, deeply Catalan street party. Over five days, the squares and streets of Barcelona fill with human towers, parades of giants, fire runs, free concerts on open-air stages, and hundreds of performances. It's the single best window into the city's living traditions, and it's almost entirely free.
The Must-See Events of La Mercè
Castellers — the human towers
The castellers build human towers up to nine or ten levels high, topped by a child who climbs to the very top and raises a hand. It's tense, breathtaking, and recognised by UNESCO as Intangible Cultural Heritage. During La Mercè, the best colles (casteller teams) perform in Plaça de Sant Jaume. Arrive early — the square fills fast.
Correfoc — the fire run
Devils and dragons run through the streets — traditionally along Via Laietana — spraying sparks and fireworks over a crowd that dances alongside them. There's a gentler children's correfoc earlier, and the full adult version after. Wear cotton, cover your arms, and don't stand too close unless you mean it.
Gegants — the giants
Towering figures of kings, queens and historical characters, carried and danced through the streets to the beat of drums and gralles (traditional Catalan wind instruments). A favourite with families and one of the most photogenic sights of the festival.
Piromusical — fireworks and music
La Mercè closes with the Piromusical: a spectacular fireworks, music and light show at the Magic Fountain of Montjuïc, on Avinguda de la Reina Maria Cristina. It's the emotional send-off to the festival and to the Barcelona summer. Get there early for a spot with a clear view of the fountain.
BAM & Música Mercè — the concerts
Barcelona Acció Musical (BAM) and Música Mercè fill stages across the city — Plaça Reial, Plaça de Catalunya, Parc de la Ciutadella and more — with hundreds of free concerts across every genre. For many locals, the late-night BAM shows are the real highlight of the week.
The Castellers: Barcelona's Most Astonishing Tradition
If you only understand one La Mercè tradition, make it the castellers. These human towers are one of the purest expressions of Catalan identity — built on the principles of força, equilibri, valor i seny (strength, balance, courage and common sense), with hundreds of people forming a solid base so a small child can climb safely to the top.
Watching a castell rise is genuinely moving. But watching one being built up close — understanding the roles, the pinya at the base, the tension in the crowd — is something else entirely.
Here's the thing most visitors don't realise: you don't have to wait for La Mercè to experience it. Our Beer & Castellers Tour takes you inside a real castellers rehearsal in the neighbourhood of Gràcia, any time of year — the only food tour in Barcelona that does. You'll drink craft beer, meet the colla, and see the tradition from within, not from behind a crowd barrier.
Can't make La Mercè? See the castellers up close, year-round.
See the Beer & Castellers TourPractical Tips for La Mercè 2026
- Book accommodation early. La Mercè is one of the busiest weekends of the year. If you're coming specifically for it, reserve well in advance.
- The 24th is a public holiday. Many shops and offices close, but bars, restaurants and central attractions stay open. Plan food around it.
- Don't drive in the centre. Streets close for parades and fire runs. Walk or use the metro, which runs extended hours during the festival.
- Check the official programme. The full schedule is usually published on the city's website (barcelona.cat/lamerce) close to the dates. Times and locations shift year to year.
- For the correfoc, dress right. Long sleeves, cotton (not synthetic), a hat, and closed shoes if you want to be near the sparks.
- Arrive early for the big events. Castellers, the Piromusical and the main parades draw huge crowds. Good spots go fast.
La Mercè and the Barcelona Food Scene
La Mercè is also a wonderful time to eat. The end of September brings the first produce of autumn to the markets, the terraces are still full, and the festive mood spills into the city's bars and bodegas. It's the perfect week to pair the street celebrations with a proper Catalan meal.
If you're in town for the festival, it's an ideal moment to explore the city through its food as well as its traditions. Our small-group Barcelona food tours run through the neighbourhoods where the celebrations happen — tapas and Catalan wine in El Born, a traditional market breakfast at Sant Antoni, or beer and castellers in Gràcia. Every tour is led by a guide who was born and raised here.
FAQ: La Mercè Festival 2026
La Mercè 2026 takes place from 23 to 28 September, with 24 September as the main day and a public holiday in Barcelona. The festival spans five days of free events across the city.
Yes. La Mercè features over 500 events and the vast majority — including the concerts, castellers, parades and the Piromusical fireworks show — are completely free to attend.
The highlights are the castellers (human towers) in Plaça de Sant Jaume, the correfoc (fire run) along Via Laietana, the parade of gegants (giants), the free BAM and Música Mercè concerts across the city, and the Piromusical — a fireworks and music show at the Magic Fountain of Montjuïc that closes the festival.
Castellers build human towers up to nine or ten levels high, a Catalan tradition recognised by UNESCO as Intangible Cultural Heritage. They are one of the signature sights of La Mercè, performing in Plaça de Sant Jaume. You can also see them up close year-round on a castellers rehearsal tour in Gràcia.
Absolutely. La Mercè is Barcelona's biggest festival and the best opportunity to experience the city's living Catalan traditions — human towers, fire runs, giants and free concerts — all in one long weekend, and almost entirely for free. It's one of the most authentic times of year to visit.
Events are spread across the city. Key locations include Plaça de Sant Jaume (castellers and the opening speech), Via Laietana (correfoc), Parc de la Ciutadella and Plaça Reial (concerts and street performances), and Avinguda de la Reina Maria Cristina at Montjuïc (the closing Piromusical).
In Barcelona for La Mercè? Taste it, too.
Small-group food tours through the neighbourhoods where the celebrations happen. Led by born-and-raised locals.
Explore our food tours