I've seen lots of castle-type artworks based on the works of Paul Klee in the art education blog-o-sphere lately and have loved them all! I used these multiple inspirations to create this lesson for 5th grade at Brimfield earlier this year. We started by looking at many of Klee's paintings and looked for common themes. The students found many abstract elements in his works, many architectural elements, and many repeating squares, rectangles, and triangles. We ended our "gallery walk" of Klee's works with Castle and Sun, and used it as the main inspiration for the artworks the students would create.
The students' assignment was to draw a castle, with as many or as little abstract elements as they wanted, and to mostly rely on squares, rectangles, and triangles to do the job! Many different-looking castles resulted and I was happy to see this! We then embarked on the use of many different media steps to complete these artworks.