The CAA 2021 Wood Shell Pavilion is one of the built projects in a series study focusing on thin and flexible wood and experiment new forms of structure to find suitable strategies of building a habitable space. A group of student are challenged to design and build by themselves a pavilion with a limited budget of 450 USD in only one month. This research is developed from a bottom-up approach which aimed to use minimized amount of material building a reliable structure in an innovative way where resources are limited in order to develop a path towards a more sustainable future of architecture.