Unfortunately the main tower and many other buildings were destroyed during the WWII bombings, and today the Sujigane Gomon gate and the Fushimi yagura turret are the only surviving structures of the castle. The main tower, photographed here, was rebuilt of concrete in 1966.
EXIF info:
Nikon Df
Lens: 24-70mm F/2.8G
Focal Length: 55mm
Aperture: F/7.1
Shutter Speed: 1/600s
ISO Sensitivity: ISO 320