As of 21 September 2026 the Barcelona ArtWalk app tracks 379 live events and 671 galleries and exhibitions across the city — and this is the year's busiest stretch. La Mercè, Barcelona's own five-day festival, opens Wednesday; a sustainable-food fair, a neighborhood festa and a fresh wave of art fairs fill the three weeks around it. Here's what's worth planning around before mid-October.
La Mercè 2026: five days of free festival (23–27 September)
Barcelona's patron-saint festival runs Wednesday to Sunday, with Thursday 24 September — the feast day of Mare de Déu de la Mercè — as the main event: castellers building human towers and the Cavalcada parade of giants fill Plaça de Sant Jaume, followed after dark by a correfoc fire-run down Passeig de Gràcia. The festival closes Sunday with a drone light show and the Piromusical fireworks display over the beach at Espigó del Gas. Nearly all of it, including BAM's concert program, is free.

BAM and Terra i Gust: the free soundtrack and food hall
BAM — Barcelona Acció Musical — runs the same five days as La Mercè's official concert program, with free shows across Parc del Fòrum, Moll de la Fusta and neighborhood squares citywide. A short walk away in Parc de la Ciutadella, the sustainable-food fair Terra i Gust (25–27 September) gathers 14 local restaurants for dishes from €5 and drinks from €2.50; entry to the fair itself is free.

This week's neighborhood festa: Festa Major dels Indians (19–27 September)
While the whole city looks toward La Mercè, Sant Andreu keeps its own tradition running: the Festa Major dels Indians fills the Congrés i els Indians neighborhood with a festival speech, traditional Esbart Maragall dances and a correfoc at Plaça del Rom Cremat, free and open to all through 27 September.
Galleries this week: a new show and a free walking route
- Joan Claret. Anys 60 — a new solo show opens 22 September at Galeria Marc Domènech; free entry.
- ARCO GalleryWalks — free self-guided routes through five gallery clusters (Sant Antoni–Ciutat Vella, Eixample, Mallorca–Passatge Mercader, Trafalgar and Gran Via–Trafalgar), Saturday 26 September. The gallery-by-gallery list from Barcelona Gallery Weekend is in our late-August roundup.
Looking ahead: Festival u22, Swab and Palo Market Fest
- Festival u22 — Fundació Joan Miró's young-filmmakers festival, 27 September–4 October; passes from €10 for the official short-film selection, €35 for a full week pass (€22 for under-22s).
- Swab Barcelona Art Fair — the city's international contemporary-art fair, at the Palacio Victoria Eugenia, 8–11 October; tickets €15–35, free for under-16s on the fair's final three days.
- Palo Market Fest — design, fashion and street food in Poblenou, 3–4 October; €6.50, free for children under 12.

Street art keeps its own calendar through festival season — Poblenou's factory murals and the legal walls at Jardins de les Tres Xemeneies turn over most weekends, independent of any of the above. Our street art guide has the self-guided route.
All of it is live in Barcelona ArtWalk: the daily What's On feed, 671 galleries and exhibitions, 200+ murals and AI walking tours. Free on iOS and Android.
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Where do you find Barcelona's most beautiful murals? What stories hide behind them — and which artists painted them? The free Barcelona ArtWalk app has the answers: 200+ mapped works with photos and background, AI walking tours with route, distance and time, plus the city's galleries, exhibitions and events. Download it free for iPhone and Android.
There's a lot to discover. Barcelona ArtWalk.

