Toyokawa Inari Tokyo Betsuin

Toyokawa Inari Tokyo Betsuin (豊川稲荷東京別院) is a Soto Zen temple located in the middle of Tokyo. The word "betsuin" means "branch temple", and as its name says, this temple is a branch temple of Toyokawa Inari (Ryogonji Temple), a famous temple in Aichi Prefecture. This branch temple was founded in 1828. The precincts of the temple highly resemble those of a Shinto shrine.
Since this temple was completely burnt down in WWII, the whole complex is post-war reconstruction.
It's a 5-min walk from Akasaka-mitsuke Station of the Tokyo Metro Ginza Line or Marunouchi Line.

Sanmon is the main gate.

Honden, the main building dedicated to Inari, is a highly Shinto shrine-like building.
What is called Honden here in this temple corresponds to the whole set of Haiden, Heiden, and Honden in a Shinto shrine.
(In a Shinto shrine, Haiden is a place to offer prayers, Honden is where divinities are enshrined, and Heiden connects these two.)

Ooka-byo is a small hexagonal building dedicated to Ooka Tadasuke (1677-1752), a famous feudal lord and admistrator known as Ooka Echizen. He was a worshipper of this temple and protected it.

Oku-no-in is also a Shinto shrine-like building enshrining Inari.

San-shinden houses three small shrines inside.