A week, a building, and the people who were in it
Barcelona already had a Claude community. It met, it built, it argued about context windows over beers on a rooftop, and it did that all year. The Claude Community House is what happened when the other European chapters brought their own version of that to the same building for a week, under one name: September 21 to 24, 2026, in Poblenou.
Who ran it
It was an independent community initiative, co-produced by The Tech Nation, Happy Operators and clauders.com, with the European Claude Ambassadors network.
16 Claude ambassadors, 15 from Europe and one from Los Angeles, hosted and animated the week. That was the whole design: the person giving the talk was the same person you were debugging with an hour later, and the sessions were proposed by the people who ran them rather than programmed from above. The Tech Nation published the programme and opened the building. It did not write, run or warrant the content of a session it did not host.
Ten European chapters were represented. Each brought its own format, its own regulars and its own way of doing things, and for one week they were all in the same place.
What it was not
It was not an official Anthropic event. Claude and Anthropic are trademarks of Anthropic PBC, used here to name the community that gathers around the product. Anthropic supported the week; it did not run it, and nothing said here is said on its behalf.
It was not a conference either. No keynote, no badge queue and no exhibition floor. A building, a programme its own hosts wrote, and a rooftop.
And it was not a lead-generation exercise. This site holds no attendee list of its own: every registration happened on Luma, run by the host of each session.
The practical part
When. September 21 to 24, 2026, four days.
Where. B@B - Bilbao 128, in Poblenou, Barcelona.
How much. Free. The one exception was The AI Afterwork - Make connections on the rooftop, 18:00 → 22:00 every evening, run separately by The Tech Nation and ticketed.
How it worked. There was no ticket to the week. Every session had its own Luma page and its own host, and people registered for each one separately. Luma sent a QR, and that QR was the door. 3,600+ bookings later, the House was full.
Who publishes this. The Tech Nation S.L., NIF B19412451, Passeig de Gràcia 2, 08002 Barcelona, Spain. An AI transformation company based in Barcelona.