When Yasuharu WAKISAKA had major repairs conducted on the stone wall, a nobori-ishigaki was built but this was later demolished as a result of the 'one castle per province' edict issued by the shogunate, and the remaining stone wall ruins are not well-preserved.
脇坂安治が石垣の大改修した際、登り石垣を設けているが、一国一城令で破却されたこともあり、遺構としての石垣の保存状態はあまり良くはない。