The Fabric Transformation Pavilion is a design proposal for an interactive, scalable, modular structure that can automatically change its color and/or opacity, based on the desires of those who encounter it. Each of the curved support frames of the structure are assembled from three different radii sections, which can be bolted together in many different ways. These separate frame sections are grouped together into various site-specific assemblages, and can be disassembled and reassembled to accommodate changing needs. The entire finished structure is fixed onto a platform. Mounted under this platform and connected to the base of each of the support frames, are rolls of fabric. These rolls of fabric are formed from multiple sections, which are connected together into different strips of various colors, patterns, and degrees of opacity. Small electric motors pull the fabric from one end of each frame to the other with thin straps, so that at any point the structure can be completely covered with various colored fabrics, and/or with no fabric at all, or somewhere in between. This can all be manipulated manually, and/or automatically. In the automatic mode, the movement of the fabric can be based on the random movements of the people who encounter the structure, along with many other appropriate criteria, like interaction through the use of smart phones. The movement of the fabric over the frames can vary in speed. In every case, the transformation of the structure would always be unexpected and inspiring. In this presentation, the structure transforms from an open frame to a red pavilion, then to a yellow pavilion, then to a green pavilion, and finally to a pavilion made of all three colors. The frames are made of sustainably grown wood, and the fabrics were chosen for their eco-friendly attributes. Beyond the selection of building materials, the Fabric Transformation Pavilion can be thought of as eco-friendly because it can change its appearance and/or function in order to accommodate changing needs. As a result, fewer of the earth’s resources are used in the construction of the one structure, which functions as many.