A meaning for a Zen garden is a physical form or representation of Zen Buddhist philosophy, Zen self-examination, spiritual refinement and enlightenment.
Zen gardens are historical Japanese gardens that date back to Muromachi period, in the 15th century. The first Zen gardens were created as aids to meditation and to teach the principles of religion.
Zen gardens are composed of natural elements such as stone, plant, wood and sand. Besides natural components, man-made elements such as bridges, pathways and lanterns can be found. Man-made elements must be made out of wood or stone, as they mean a natural atmosphere, balanced environment and peaceful meditation spot.
A Zen garden represents a setting for human activity and is an expressions of individual worlds of thought.
Sand represents water. Gates made out of wooden fences or cloth are called torii, and symbolize boundaries. Stones are major elements, and can symbolize eternity, fertility and are considered more important than trees.