The aim is to create a porous machine at the entrance to the Highline that inspires visitors with actionable insight into sustyainbale system. The project is divided into three main parts. The main program includes residential building, welcome center for High Line, the storage and office space for Friends of the High Line. And there will also be anaerobic digestion systyem underground as a pat of the system in the building. On the top is the luxury residential building with community space each three stories. The Welcome center of High Liine and the storage and office for Friends of the High Line is on the ground level and the street level which has height difference with ground. In addition, there is an annaerobic degestion system at underground level to collect energy from buildings and turn them into electricity.