The very last panel from the last Tintin book (TINTIN AND ALPH-ART, 1986), sketched by Hergé, who died before the story could be completed.
As Hergé had ruled that there would be no more books after his death, Tintin’s adventures end there, with him about to be turned into a plastic statue by the main villain.
At the end of the Musée Hergé tour there’s a huge neon recreation of this drawing and it made me drop all my stuff all over the floor