The most recent structure was built in the 15th century by Ōishi Sadahisa and existed during the 16th-century Sengoku period of Japanese history.

[1] Then Go-Hōjō clan expanded and improved the defences of the castle.

[2] After 1590, the castle was abandoned simultaneously with the arrival of Tokugawa Ieyasu into the region, having outlived its purpose.

The castle is now a ruin, with clear archeological evidence of the foundations of a number buildings and a dry moat.

The castle grounds now form a recreational park including walking paths, a children's play area and a baseball field.