Climb the steps and enter the temple of Hisako.
This is facing the old Tokaido Road. It was built in 1562 to house the remains of Hisako, Ieyasu’s great aunt, who raised him for several years after his mother, Odainokata, died. It received special protection from the Tokugawa Shogunate and was used as a defensive base to guard Okazaki castle.
It is of the Jodo sect and is the 2nd temple of the Mikawa pilgrimage to the 33 places of Kannon. They mainly worshop Amida Nyorai and Senju Kanzeon Bosatsu (Bosatsu with 1,000 arms) here.
I’ve always loved this entrance.