What was Franz Marcs favorite piece of work he created?

Franz Marc's favorite piece was often considered to be "The Tower of Blue Horses" (1913). He believed it represented his artistic ideals and emotional expression, showcasing his fascination with color and form. The painting features vividly colored horses, which symbolize strength and vitality, and reflects his deep connection to nature and spirituality. Marc's innovative use of color and abstraction in this work exemplifies his unique approach to art.