Poblenou was the Manchester of Catalonia — mills, foundries, smoke — and then it wasn't. The factories closed, the chimneys stayed, and the city rebranded the whole grid as 22@, its tech quarter. The good news for a walker: they kept the bones. Brick survives between the glass.
Three and a half kilometres, best in the afternoon. Start at Can Framis, a textile factory reborn as a contemporary-art museum — bare brick and Catalan painting, a courtyard you won't want to leave. Walk south through the 22@ blocks and count the surviving xemeneies, the slim chimneys left standing on purpose.
Then the Rambla del Poblenou. This is the heart of it: a local promenade under plane trees, no souvenir stalls, just benches and the slow rhythm of a barri that kept its village. Detour to Plaça de Prim for the old fishermen's cottages — single-storey, whitewashed, a square out of another century.
The rambla runs to the sea. Pass the cemetery if you like, then step onto Platja del Bogatell — wider and quieter than Barceloneta, the beach locals keep for themselves. Bogatell metro takes you home.
