Daiju-ji is the family temple of the Matsudaira and Tokugawa clans, founded in the 15th century. Its treasures include the graves of Matsudaira ancestors, memorial tablets for Tokugawa shoguns, and important cultural properties in a calm temple compound north of the city centre.
The detail everyone remembers is the straight view line from the temple gate toward Okazaki Castle. It ties the temple and castle into one landscape, and makes the Tokugawa story feel less like a museum label and more like city geography.