Some of the earliest structures still extant in Japan are Buddhist temples established at this time. The oldest surviving wooden buildings in the world are found at Hōryū-ji, northeast of Nara. First built in the early 7th century as the private temple of Crown Prince Shōtoku, it consists of 41 independent buildings; the most important ones, the main worship hall, or "Kon-dō" (金堂, Golden Hall), and the five-story pagoda), stand in the centre of an open area surrounded by a roofed cloister ("kairō"). The Kon-dō, in the style of Chinese worship halls, is a two-story structure of post-and-beam construction, capped by an "irimoya", or hipped-gabled, roof of ceramic tiles.