Because it was the most important residence of its type, during the Tokugawa shogunate was used for accommodation by the government's inspectors, so it was preserved as it was at the beginning of the Edo period, 350 years ago. Besides the main house, the Kikuya residence also includes several annex buildings, and it was declared an Important Cultural Properties.
EXIF info:
Nikon Df
Lens: 24-70mm F/2.8G
Focal Length: 24mm
Aperture: F/18
Shutter Speed: 1/60s
ISO Sensitivity: ISO 3200