At the Kite Museum in Nihonbashi there are numerous kites from the Edo period with intricate designs and mystical figures.  The kite frames are made of bamboo and the sail material is mainly made of washi for its extraordinary strength. The “Kohzo” tree, a type of mulberry, is the most important source for paper fibres in washi. The kite picture is first outlined in dark “sumi” ink to restrict the pigments to the desired areas, and then outlines are filled in and accented with colors traditional to Japanese paintings.