Three types of wood were used for the timber work, Japanese cypress, zelkova and pine. A modern change is that metal nails were used, and an interesting fact is that the nails are made of the same metal as the Japanese blades.
EXIF info:
Nikon Df
Lens: 24-70mm F/2.8G
Focal Length: 24mm
Aperture: F/6.3
Shutter Speed: 1/500s
ISO Sensitivity: ISO 200