The castle was an important fortification at the end of the Sengoku Jidai, when two clans, Shimazu and Ito, fought hard to own it. The castle was dismantled at the beginning of the Meiji Period, like many other Japanese castles.
EXIF info:
Nikon Df
Lens: 24-70mm F/2.8G
Focal Length: 24mm
Aperture: F/6.3
Shutter Speed: 1/250s
ISO Sensitivity: ISO 400