The ground floor, known as "Hossui-in," is rendered in the shinden-zukuri-style and in the center is a Hokan-Shaka-Nyorai-zo statue facing a portrait of Yoshimitsu ASHIKAGA depicted as a Buddhist priest (some sources claim the statue to be Amida Nyorai).
初層は寝殿造風で「法水院」（ほっすいいん）と称し、中央に宝冠釈迦如来像、向かって左に法体の足利義満像を安置する（安置仏像を「阿弥陀如来」とする資料もある）。