A pioneering Swedish painter whose visionary works predated much of modern abstraction, Hilma af Klint began experimenting with bold color, geometry, and symbolism as early as 1906 — years before artists like Kandinsky and Mondrian. Guided by spiritualism and a belief in unseen dimensions, she created vast, intricate compositions that blended science, mysticism, and nature, establishing her as one of the true forerunners of abstract art.