Palau-solità i Plegamans Main Festival Activity · Palau-solità i Plegamans, Vallès Occidental, Barcelona The Festa Major of Palau-solità i Plegamans is celebrated at the end of August (27-31 August in 2026), with the opening address, the Trempada, children's and adults' "correfocs" fire-runs, a gathering of giants and castellers, and a closing fireworks-and-music finale. Photo: CatIndepe96 (CC BY-SA 4.0) What to see and do in Palau-solità i Plegamans