Ornament is applied to the structural trusses that suggests a grove of trees. Photos courtesy of PhotoKosuge; Kawasumi Architectural Photograph Office; Koji Horiuchi 
Clerestory windows admit shafts of ambient light during the day . The light is modulated by lacelike space frames with attached leaves conveying the sense of forest clearing.

Looking south the surfaces of the "leaves" are green; looking north they are yellow --
to suggest summer and autumn alternately.  

The design of Nikko Kirifuri acknowledges the cultural and historical dimensions,
local and universal, that reinforces Nikko as a functioning community and as a renowned religious and architectural place.