epa12022148 People visit the exhibition 'Helen Frankenthaler: Painting Without Rules' at the Guggenheim Museum of Bilbao, Spain, 10 April 2025. The exhibition, running from 11 April to 28 September, gathers the work of Frankenthaler, best known for her invention of the soak-stain technique, which played a pivotal role in the transition from Abstract...

epa12022147 People visit the exhibition 'Helen Frankenthaler: Painting Without Rules' at the Guggenheim Museum of Bilbao, Spain, 10 April 2025. The exhibition, running from 11 April to 28 September, gathers the work of Frankenthaler, best known for her invention of the soak-stain technique, which played a pivotal role in the transition from Abstract...