MUHBA Refugi 307: Barcelona's Underground Air-Raid Shelter
MUHBA Refugi 307 is a Spanish Civil War air-raid shelter dug by hand into the flank of Montjuïc, a warren of tunnels where residents of Poble Sec sheltered from bombing. It is one of the most moving and least-visited corners of Barcelona's history museum, and you reach it only on a guided tour.
In Hidden Gems in Barcelona · Poble Sec · Last updated 2 June 2026
- A real air-raid shelter carved into Montjuïc during the Spanish Civil War
- Roughly 400 metres of narrow tunnels dug by hand by Poble Sec neighbours
- Part of MUHBA, the Barcelona History Museum
- Seen on a guided visit that passes a former infirmary, toilet and children's area
- A quiet, low-cost site far from the usual tourist trail
What is MUHBA Refugi 307
MUHBA Refugi 307 is a Spanish Civil War air-raid shelter set into the hillside of Montjuïc, in the working district of Poble Sec. When Italian and Francoist aircraft began bombing Barcelona, local residents dug this network of tunnels by hand to protect their families, extending it over time into roughly 400 metres of narrow passages. It survives today as part of MUHBA, the Barcelona History Museum, which cares for the site and opens it to visitors.
The shelter was never a bare hole in the ground. As you follow the guided route you pass a former infirmary, a toilet and a small area set aside for children, all evidence of a community trying to hold on to normal life underground. Guides fill the tunnels with vivid accounts of what it was like to wait out a raid here, which turns a short walk through the dark into something you do not quickly forget.
Why it stays a hidden gem
Most visitors to Barcelona climb Montjuïc for the castle, the gardens and the views, and never learn that a wartime shelter runs into the hill below them. Refugi 307 sits away from the main sights, opens on limited days and takes only small guided groups, so it rarely appears on a first-time itinerary. That is part of what keeps it quiet and personal.
For anyone interested in the real story of the city, this is one of the most rewarding stops in Barcelona. It swaps grand architecture for lived history and asks you to picture ordinary neighbours sheltering underground while the bombs fell above.
Visiting on a guided tour
You can only see MUHBA Refugi 307 on a guided visit, and places are limited, so booking ahead is strongly advised. Tours run mainly on Sundays, with weekday slots for groups by reservation, and the ticket is a low-cost museum entry rather than a premium tour. Times can change with the museum calendar, so check the current MUHBA schedule before you go.
The tunnels are narrow, cool and uneven underfoot, so wear comfortable shoes and a layer, even in summer. The site sits in Poble Sec near the foot of Montjuïc, an easy walk from the metro, and pairs well with a wider afternoon exploring the neighbourhood and the hill above.
Know before you go
- Book ahead, visits are guided and places are limited.
- Wear comfortable shoes and a layer, the tunnels are narrow, uneven and cool.
- Check the current MUHBA schedule, opening days and times can change.
Where MUHBA Refugi 307 is
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Where to stay near MUHBA Refugi 307
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MUHBA Refugi 307: frequently asked questions
What is MUHBA Refugi 307 in Barcelona?
MUHBA Refugi 307 is a Spanish Civil War air-raid shelter dug into Montjuïc in the Poble Sec district. It is part of the Barcelona History Museum and is visited on a guided tour through around 400 metres of tunnels.
How do I get MUHBA Refugi 307 tickets?
You visit on a low-cost guided ticket booked in advance through the Barcelona History Museum. Places are limited, so reserving ahead is strongly advised rather than turning up on the day.
What are the MUHBA Refugi 307 opening hours?
Guided tours run mainly on Sundays, with weekday slots for groups by reservation. Times can change with the museum calendar, so check the current MUHBA schedule before your visit.
What will I see on the MUHBA Refugi 307 guided tour?
The guided route leads through narrow tunnels past a former infirmary, a toilet and a children's area, with the guide describing what life was like sheltering here during the bombing of Barcelona.
Is MUHBA Refugi 307 worth visiting?
Yes, especially for anyone interested in the city's real history. It is a moving, low-cost and rarely crowded site that shows how ordinary neighbours sheltered underground during the Spanish Civil War.
More hidden gems in Barcelona
Sources and further reading: Wikipedia: Refugi 307.