Orbis Pictus, meaning 'The Visible World', is a groundbreaking illustrated book for children, published in 1658 by John Amos Comenius. It is considered one of the first picture books aimed at children, combining images and text to enhance learning, particularly in the context of education reform during the 17th century. This work emphasized visual learning and the importance of using illustrations to explain complex concepts, reflecting a shift towards more engaging and accessible educational methods.