These imaginative ink and watercolor castles are inspired by prominent turn-of-the-century Oklahoma architect, Joseph Pierre Foucart. Foucart was the first architect to establish a practice in the Oklahoma territory and many of his unique and historical buildings remain in use today. They are especially prominent in Guthrie, OK, where Foucart set up his practice in 1889. Foucart brought the influence of European Gothic with him to Oklahoma and helped develop a new style called Prairie Gothic. Foucart was known to break some of the rules of his day, irreverently mixing and matching window, door, and column styles on the same building. Without a doubt, Joseph Foucart changed the landscape of Oklahoma with his love for the fantastical and whimsical. The following lesson plan was used in a mixed-age setting with students ages 6-12. It could be adapted for students up through high school.