As Charles Perrault had not detailed the castle in his 1697 fairy tale, Imagineering had few restrictions regarding its physical appearance. However, Walt Disney's own 1959 film Sleeping Beauty provided the inspiration for, among other things, the Castle's surrounding square trees.
The absence of detailed descriptions from Charles Perrault's fairy tale enabled Imagineering to develop a distinctive castle structure. Walt Disney's 1959 film "Sleeping Beauty" provided inspiration for specific features, including the surrounding square trees.