Stained glass window, The Hill House Glasgow 

This stained glass window, created by Charles Rennie Mackintosh, features a stylized rose, a common motif in his work. The Art Nouveau style is evident in the sinuous lines and organic forms, creating a sense of fluidity and movement. The use of rich colors, including pink, green, and blue, adds to the overall beauty and vibrancy of the piece. This example showcases Mackintosh's distinctive approach to stained glass, incorporating geometric shapes and natural motifs into his designs. The window likely adorned one of the many spaces within the Hill House, a testament to Mackintosh's mastery of interior design.