Hakone Wooden Mosaic (Yosegi-zaiku) is a craft from the Hakone region that assembles naturally colored woods into dazzling geometric patterns without dyes or paints.
Planks of contrasting wood species are joined, sliced thin, and applied to boxes, trays, and ornaments — creating intricate mosaics that reveal the pure beauty of Japanese woods. The famous Hakone puzzle boxes (himitsu-bako) are a signature expression of this tradition.