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Information aggregated automatically. Verify all dates, locations, and pricing on the official conference website before making arrangements.
Mozilla Festival is an in-person conference in Barcelona, Spain focused on Networking, Infrastructure, Cloud. The event gathers cloud architects and engineers for a day of talks, workshops, and peer networking in 2026. Sessions explore multi-cloud strategies, serverless architectures, cost optimisation, and cloud-native security. The conference takes place in Barcelona, Spain.
MozFest arrives in Barcelona at the end of October, and its open-web, civic-technology crowd tends to gravitate to Poblenou rather than the tourist core. The old textile district east of the centre was rebuilt as an innovation quarter, and its wide grid of converted factories, co-working halls and a genuinely local rambla sits ten minutes from the beach. Late October still delivers twenty-degree afternoons and empty sand.
El Prat (BCN) is 15 kilometres south-west. The Aerobús runs to Plaça Catalunya in about 35 minutes, Metro line L9 Sud connects with the wider network, and the R2 Nord train reaches Sants and Passeig de Gràcia in around 25 minutes for the price of a normal fare. High-speed rail links Madrid to Sants in two and a half hours.
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City Wi-Fi hotspots exist but are slow, while mobile coverage is excellent including on the Metro. An eSIM is the simplest option for non-EU attendees, since Spanish prepaid SIMs require registration with a passport. Set up an eSIM with Airalo before you board and you're online the moment you land.
Sagrada Família. Gaudí's basilica is still unfinished and still the most extraordinary building in the city, particularly late in the afternoon when western light comes through the warm-toned windows. Entry is timed and sells out days ahead. Ninety minutes covers the interior; the tower lifts need a separate ticket. Tickets on Tiqets →
Parc de la Ciutadella. Barcelona's central park occupies the site of a demolished fortress, with a cascade fountain Gaudí worked on as a student and a boating lake among the plane trees. It sits between the Born district and Poblenou, making it the natural walking route between the old city and the tech quarter.
Bunkers del Carmel. Civil-war anti-aircraft emplacements on a hill above Gràcia give the best free panorama in Barcelona, taking in the whole grid down to the sea. It is a steep twenty-minute climb from the nearest bus stop. Sunset draws a crowd; early morning has the light and the quiet.
Poblenou and its rambla. The Rambla del Poblenou runs from the innovation district down to Bogatell beach, lined with the kind of neighbourhood cafés and vermouth bars that have been squeezed out of the centre. It is where festival attendees end up in the evening, and the walk to the water takes fifteen minutes.
How warm is Barcelona at the end of October?
Highs of about 20 to 22°C with mild evenings and occasional heavy autumn showers. The sea is still around 21°C, so swimming is possible if not universally appealing.
What happens around 1 November?
All Saints' Day is a public holiday in Catalonia, marked locally with the Castanyada and roasted chestnut stalls. Many shops close, though restaurants and attractions largely stay open.
Any practical warnings?
Pickpocketing on the Metro, at Sants station and along the Rambla is persistent and organised. Bags in front, phones away from café terrace tables, and nothing valuable in back pockets.
Travel notes written for Mozilla Festival attendees. Links marked above are affiliate links — we may earn a commission at no cost to you. Verify schedules and opening hours on official websites before you travel.
Affiliate links — we may earn a commission at no cost to you.