Refugi 307

Refugi 307 is an air-raid shelter beneath Montjuïc, in Barcelona’s Poble Sec neighbourhood. Its tunnels run through the hillside, with three entrances and winding corridors. Lime-coated walls, brick vaults, and zigzag passages reveal how the shelter protected civilians from explosions and shrapnel.

Poble Sec residents excavated the shelter during the Spanish Civil War, with support from Barcelona authorities and the Generalitat de Catalunya. Nearly four hundred metres of passages contain toilets, a small infirmary, a children’s area, and a fireplace. A cistern, water system, and electric accumulators supported daily life between air raids. Instruction signs remain visible along the tunnels, while the layout shows how maintenance and cleaning shaped the shelter’s use.

After the war, the space became a mushroom farm, a glass-factory storehouse, and temporary housing for families. Archaeological work documented the galleries, and the preserved shelter now forms part of the Museu d’Història de Barcelona. Guided visits pass through rooms where wartime residents once sought protection, leaving the children’s area as one of its most striking details.