zen garden , a serene zen garden with raked gravel, mossy stones, and a bonsai tree, creating a peaceful oasis

garden design serene raked gravel mossy stones bonsai tree peaceful oasis harmony tranquil meditative calm simplicity zenful quiet serenity relaxation contemplation beauty landscape therapy balance harmonious spiritual meditation soothing asian zenlike peace tranquility stillness greenery minimalism nature peacefulness calming spirituality calmness quietude japanese relaxing quietness ai generated