Actually, this is one of the most famous Japanese covered bridges, because it once belonged to the Kyoto Imperial Palace. The roof's role is to are protect against rain and snow and to create a viewing point for the visitors, so the Heian Jingu hashidono was built with wooden benches on both sides, incorporating a moon viewing pavilion in the middle.
EXIF info:
Nikon D700
Lens: 24-70mm F/2.8G
Focal Length: 45mm
Aperture: F/5.6
Shutter Speed: 1/800s
ISO Sensitivity: ISO 1250