Sanja Matsuri 三社祭 is a festival held in third Saturday and Sunday of May, to celebrate 3 founder of Sensoji Temple which is inside the Asakusa Temple. The founder made prosperity for Asakusa and neighborhood, and then revered as deities for their contribution to local good progress in Asakusa.
The people were caring Portable Shrine ( 神輿) around Temple, Kaminarimon, Nakamise Street which believe to spread the lucky / good fortune for surrounding. The Portable Shrine weight could be 1 ton, decorated with black color on the roof and gold paper for all the bodies. Regarding the weight, it is wise if make a distance as the mikoshi carrying people need space to turn left/right ( it`s heavy ). This one of three mikoshi will appear on Sunday or Final day, so the Sunday will be more people to watch.
A lot of groups from Tokyo are participate, bring their own mikoshi, carry it and shout happiness, a good blessing for us.