Charles Rennie Mackintosh 2012 Calendar. This 2012 calendar contains 12 stunning artworks reproduced in the fantastic collection to celebrate the painter Charles Rennie Mackintosh who was a Scottish architect, designer, watercolourist and sculptor. Charles was a designer in the Arts and Crafts movement and also the main representative of Art Nouveau in the United Kingdom as well as having a considerable influence on European design. This stunning collection of his paintings features some of his finest watercolour creations to take you through each month of 2012.