Decameron opened in 2020 in the heart of Shinjuku Kabukicho. The exhibition space on the second floor mainly hosts exhibitions by young and mid-career artists from Japan and abroad. The community space on the first floor provides a place for interaction before and after viewing. In addition to the concepts/statements that each artist puts forward for the exhibition, Decameron sets an annual theme, and is currently planning with a focus on the perspective of "evaluation." In addition, the museum is always conscious of "management" and aims for "collaboration" not only with artists but also with viewers.