Our previous study proposed the QDP method. However, this study only revealed the visual changes in one type of architectural space. This study classified the Clustered type gallery space into two types: a serial gallery space and a parallel gallery space. We conducted spatial description and analysis using the QDP method for each spatial element. As a result, as a practical application of this quantification method, we were able to present a method that, although limited, can be applied to the CV Museum and the Tanimura Museum to express the characteristics of each type quantitatively.