Poble Sec: the three chimneys and Carrer de Blai
The old music-hall avenue, a Civil War shelter in the hillside, and a street of one-euro pintxos. This is a Claude-drafted route awaiting the editor's walk.

1. Avinguda del Paral·lel
The wide avenue that was Barcelona's Montmartre — cabarets, music halls, the city's old appetite for a night out. A couple of the theatres survive; read the avenue as the spine the rest of the walk hangs off.

2. Les Tres Xemeneies
Three 72-metre brick *xemeneies* (chimneys), all that's left of La Canadenca, the power station that lit the city's first electric lights. The little park beneath them is now a skate-and-graffiti spot; come for the scale of the stacks.

3. Refugi 307
A Civil War air-raid shelter bored into the Montjuïc hillside — close to 400 metres of tunnel dug by the neighbourhood itself. Visits are by guided tour on set days; check the MUHBA schedule before you count on getting in.

4. Carrer de Blai
The pedestrian street that is Poble Sec's dinner. Bar after bar of *pintxos* — small things on bread, speared with a cocktail stick — where you grab a plate, eat, and pay by the sticks left behind. Start early; the good ones go fast.

5. Carrer de Blesa / Poble Sec backstreets
Cut through the quiet residential grid above Blai — low buildings, tiled doorways, the odd tiny square. The contrast with the avenue's noise is the whole reason to detour.

6. Jardins de les Tres Xemeneies / Poble Sec station
Loop back toward the Paral·lel end and Poble Sec metro on Line 3. If the evening's still young, the chimneys are floodlit and worth a last look.

Poble Sec: the three chimneys and Carrer de Blai