Ana Hachimangu (穴八幡宮), located two minutes away from Tokyo Metro Tozai Line Waseda Station, is a Shinto shrine established in 1062.
The entire shrine compex is post-war reconstruction but neatly maintained.
On the front side of this gate, two statues of guardian deities Zuishin (or Zuizin) are housed. On the back side, two figures of horses are displayed.
Haiden is where you offer prayers.
Koro is the building a drum is hung.
Shutsugenden is situated in front of a hole where a statue of Amida Nyorai is said to have been found in 1642. Before the Meiji Restoration took place in 1868, Hachiman, the god(s) enshrined in Ana Hachimangu, was regarded as an avatar of Amida Nyorai.
In mid-October, there is a Yabusame ritual dedicated to this shrine at nearby Toyama Park (MAP). In this ceremony, archers clad in traditional outfits shoot arrows at targets from running horseback. For details about this event, see the article on Takadanobaba Yabusame.