This beautiful tradition is believed to originate 1200 years ago, when the kami of Usa Hachiman Shrine in Kyushu was brought to the capital in a palanquin normally used by the emperor.
EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 30mm
Aperture: F/5.6
Shutter Speed: 1/640s
ISO Sensitivity: ISO 200