The Green Fabric is the project that suggests the new type of park for metropolitan Seoul today. Typical parks that are planned on the ground level are generally acceptable in the development period of the city. As more ground levels are built, however, it is difficult to get a place for a new park. As a result, most green spaces end up being located at the border of the city, far away from where people live. Therefore, this new park layer itself on the existing city fabric. This action of layering can provide new land for the greenery that is close to modern people's lives. Also, it can separate the park visitors from all the busy environment of the city, such as cars and noise. Finally, the layering allows overcoming the limitations of the city fabric by connecting different places above the ground level. As the construction for the park, a modular system is applied for fast and easy installation. The system is beneficial not only to the initial development but also to the additional change to the park. As in other parts of the city, the surroundings are expected to change over time. The modularity will help prepare the park for unexpected changes in the future.  The spatial components of the park are paths, greeneries, community spaces, and leisure spaces. While walking along the paths, people can get different experiences by getting into different spaces. For instance, she can go into the greenery space to be in immersive nature and meditate or drop by community space to meet with friends. A generative design technique that can provide various options based on the set of rules is used to create these spatial experiences. The Green Fabric will help provide greenery to people who lack nature in their lives and suffer from environmental issues such as air pollution.