Kato-zu is an area in Katori, Japan.
There are the 12 bridges, mainly, of wood.
The 12 bridges at Kato-zu – trip to Katori, Japan –
The 12 bridges at the area of Kato-zu
Visiting Katozu (cast) 12 Bridge (Sawara) trip, gourmet portal: TV TOKYO
There are the links of Japanese sites.
Summerfield’s old Links 
ピンバック: A cat on the woodn bridge. | Summerfield84's English blog