Of far greater interest will be the cottage that is situated just beyond the information board.
Window 1. A = the number of bulges on the yellow hive in the centre of the picture.
Window 2. B = the number of petals on the white flower in the top-right corner.
Window 3. C = the number of drawers in the bedside unit (left of the bed).
Window 4. D = the number of green Es.
The cache can be found at N49 A . (A ÷ D) (B ÷ C) D W002 B . (B - D) (A - B - D) D