Photographed here is the gate of one of them, once belonging to a high-ranking samurai family, Kagawa. This type of gate, called nagaya-mon, was in fact a row house (nagaya) with a gate in the middle, being used at the same time as guard room and lodging for low-ranking samurai.
EXIF info:
Nikon Df
Lens: 24-70mm F/2.8G
Focal Length: 24mm
Aperture: F/7.1
Shutter Speed: 1/500s
ISO Sensitivity: ISO 320