European Museums Face a Heatwave Test They Were Never Built For
A summer of extreme temperatures is exposing a fault line in Europe’s museum sector: some institutions are becoming public refuges, while others are forced to scale back access just to keep buildings and collections stable. The contrast is especially sharp in cities where museums are now part of the emergency response to heat.
That tension is the subject of TOO HOT: Scorching Cities, New Ideas, which opened on June 20 at the Deutsches Architekturmuseum in Frankfurt and runs until February 7, 2027. The exhibition examines how architects and planners can create cooler urban spaces without sending energy costs soaring — a question museums are now confronting in real time.
Across Europe, the response has been uneven. In Bordeaux, Nantes, Lyon, and Strasbourg, municipal authorities have kept local museums free or open on normal closing days so residents can use them as “islands of freshness.” In Brussels, Amsterdam, and Geneva, smaller museums have closed rooms or restricted access after interior temperatures reached 30C. In Paris, the Musée Carnavalet has closed everything except its temporary exhibition rooms, the only spaces with air conditioning. The Musée du Louvre, meanwhile, announced it would close two hours earlier from Wednesday to Saturday, citing rising temperatures and difficult visiting and working conditions during the hottest part of the day.
The reasons are familiar to anyone who works in heritage buildings: age, construction type, limited flexibility, and cost. Ann Bourgès, a senior conservation scientist at the French ministry of culture’s Centre for Research and Restoration of France’s Museums and secretary general of the French chapter of the International Council on Monuments and Sites, said many European museums are housed in buildings “conceived for a climate that no longer exists.” She added that institutions are not yet prepared for these events, whether in terms of visitor comfort, staff conditions, or conservation.
The Louvre has begun climatic cartography of its rooms and is participating in JPI Refresh, a European research project focused on the impact of climate on artwork conservation. “We’re doing the right thing, but are being taken over by events,” Bourgès said.
Insurance specialist Aqua Sanfelice di Monteforte, managing director for fine art, jewellers block & specie at Bridge Specialty International, said larger institutions with conservation teams and investment capacity are generally better equipped, while many smaller or historic museums are still catching up as temperature extremes become more frequent and less predictable.
A 2022 survey by the Network of European Museum Organisations, which covered 578 museums in 38 countries, underscores the scale of the gap. Fewer than one in ten respondents had analyzed climate-change challenges in their region, and only three in ten had assessed the climate impacts they were likely to face. More than half reported having no climate-friendly construction at all.
As heatwaves become more persistent, museums are being asked to do more than preserve art. They are being asked to function as civic infrastructure — and many are discovering that their buildings were never designed for that role.
