Ключевые слова: arch, arch bridge, bridge, bridge pier, buildings, civil engineering, cliff, era river, february, five arches, five in a row, fivearch bridge, full semicircle, grace, history, innai town, inside the hospital, japan, japans greatest stone bridges, king ishibashi, koshita, kyushu, lady of the stone bridge, landscape, mason, matsuda shinnosuke, megane bridge, oita, oita prefecture, river, rivers, seiichiro tsuru, semicircle, sightseeing, stone bridge, sunny, taisho period, tangible cultural property, thin pier, torii bridge, toriihara, tourist attractions, tourist spot, trip, usa, usa city, valley, winter, yakkan river system, yakkangawa,