North of the elevated terrace are three smaller buildings. At the northeast corner of the courtyard is the Ho Phra Nak, used as a royal columbarium housing the ashes of minor royals. In the center of the northern court is the small Wiharn Yod, which, in a break from the colored mirror tiles of the other buildings, is finished in bits of Chinese porcelain. In the northwest corner is the Ho Phra Monthien Tham, the 'auxiliary library' where Buddhist texts are stored.