Two climate activists have glued themselves to the frames of two famous paintings by Spanish master Francisco de Goya at the Prado Museum in Madrid.
On the wall between the paintings "The Naked Maya" and "The Clothed Maya" they wrote "+ 1.5 C", as could be seen on video images.
The Paris climate agreement of 2015 stipulates the goal of stopping global warming at 1.5 degrees if possible and thus preventing the worst consequences of climate change.
The two people wore shirts with the imprint "Futuro Vegetal", which translates as "vegetable future".
According to the group, it is fighting the climate crisis by advocating agriculture with only plant-based products.
The Spanish government condemned the action.
Such an "act of vandalism" only provokes "general rejection," emphasized Minister of Culture Miquel Iceta.
No matter how good a thing justifies "attacking the common heritage of all".
The Prado Museum also criticized the protest.
In the past few weeks, climate activists have held similar campaigns in numerous art museums in Europe.
On Friday, environmentalists from the Last Generation group threw pea soup at a Vincent Van Gogh painting in Rome after mashed potatoes were thrown at a painting by Claude Monet in the Barberini Museum in Potsdam.
Leonardo da Vinci's "Mona Lisa" in the Louvre and Johannes Vermeer's "Girl with a Pearl Earring" in The Hague have also been the target of similar protests.
Since all of the affected artworks were behind glass, they remained undamaged.