It was assumed that the area around Kambaikan used to be Hana no gosho (Palace of Flowers) which the 12th Shogun Yoshiharu ASHIKAGA rebuilt according to Rakuchu Rakugai-zu (painting of Kyoto and its surroundings); these cobble stones are assumed to be the groundwork for the building at the northeast corner and the tile-roofed mud wall at its south because the things discovered and Rakuchu Rakugai-zu match.
洛中洛外図により、寒梅館周辺は第12代将軍足利義晴が再築した花の御所のあった場所と推定され、出土したものと、洛中洛外図が一致するため、この石敷きは花の御所の北東隅の社とその南の築地基礎と推定される。