Sawara-no Taisai is a traditional festival held in Sawara, a natural waterway district, known for the cherished old townscape. With a 300-year history, Sawara Taisai is designated as a significant intangible folk cultural asset of Japan.

During the 3-day festival, various events are staged on streets in Sawara old town, featuring the parade of Dashi floats decorated with giant Samurai dolls, accompanying of traditional festival music "Sawara-bayashi".

Sawara-no Taisai Festival in autumn 
佐原の大祭 秋祭り

October 13th(Fri) - 15th(Sun) 2017 from 10:00AM to 10:00PM 
Location: Sawara in Katorishi (Next to Narita) , Chiba prefecture

Katori City guide https://www.city.katori.lg.jp/sightseeing/multilingual/en/index.html

Youtube by zipang sky https://youtu.be/Vx9U_f02HVc

Related article on digi-joho TOKYO: Attractions in Sawara and Katori City, Chiba Prefecture