A castle with a terraced structure can be clearly seen on a Meiji period cadastral map on the small hill in the area called 'Furushiro', on the western side of Nobeoka High School run by Miyazaki Prefecture however currently it is being gradually destroyed by encroaching housing developments.
また、宮崎県立延岡高等学校西側に位置する字「古城」の小山は、明治期の地籍図では階段状に構築された郭構造を明瞭に読みとることができるが、現状は宅地開発が進み破壊が著しい。