Charles I on Horseback is a significant portrait painted by the artist Anthony van Dyck in the 17th century, showcasing King Charles I of England in an imposing and regal pose atop a horse. This artwork exemplifies the Baroque style with its dramatic use of light and shadow, as well as its emphasis on realism and grandeur. The painting serves to convey the power and authority of Charles I, reflecting the themes of monarchy and divine right that were prevalent during the period.