Nobunaga initiated a period in Japanese art history known as Fushimi, or the Azuchi-Momoyama period, in reference to the area south of Kyoto. He built extensive gardens and castles which were themselves great works of art. Azuchi Castle included a seven-story Tenshukaku, which included a treasury filled with gold and precious objects. Works of art included paintings on movable screens ("byōbu"), sliding doors ("fusuma"), and walls by Kanō Eitoku. During this time, Nobunaga's tea master Sen no Rikyū established key elements of the Japanese tea ceremony.