It says:

“Asakusa Shirine

The Asakusa Shrine had its origin in the joing enshrinement of Hinokuma no Hamanari, Hinokuma no Takenari, who picked up the image of Kannon, the main idol of the Sensoji Temple, from the Sumida River, and the Haji no Matsuchi, who made the image as the target of the people’s worship.

The present shrine building was reconstructed by Tokugawa Iemitsu in December 1649. It is highly rated as the representative building of the Gongen structure of the early Edo Era, and has been designated as an important cultural asset of the nation. The Sanja Festival, held in May every year, is one of the three biggest festivals in Tokyo.”