A little less outstanding but with a great visual impact are the disk-shaped end tiles called gatou. Decorated with floral motifs, with the tomoe abstract shape or, most frequently, with the clan's kamon, they have both an aesthetic and a practical role, deflecting the rainwater away from the wall...
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EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 48mm
Aperture: F/5.6
Shutter Speed: 1/60s
ISO Sensitivity: ISO 200