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Visitors look at the artwork "The Matter of Time" by US artist Richard Serra during the presentation of the "25 Years of the Museum Collection" exhibition on the 25th anniversary of the Guggenheim Museum Bilbao in the Spanish Basque city of Bilbao on October 18, 2022. (Photo by ANDER GILLENEA / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION (KEYSTONE/AFP/ANDER GILLENEA)