This time we sought a single space that comprehends the surroundings and the house by rethinking elements such as floors and walls that make up architecture. Specifically, in the ground layer some spaces are connected to each other by a tunnel that becomes a concrete anthill nest attached with a small entrance on the ground. Above the ground a floating wooden nest box composed of things like branches and fallen leaves cover the nest on the ground’s surface. Although non-sequence composition of the floors and the walls make the architectural elements look separated, they will become essentials that link architecture and the surrounding in succession, when viewing the environment on the whole.