The Ihlseng Cottage was originally built during the early years of the 20th century to house a single family. Over time, as the university grew, the function of the cottage changed a number of times. In 1966 Penn State created the Institute for Arts and Humanities as an interdisciplinary advanced research center. The institute was given the Ihlseng Cottage as their headquarters. Over the course of all of the programmatic shifts, the shape and size of the cottage also changed to accommodate different needs. Today, the institute effectively provides individual work spaces to its residents. However, there is an obvious lack of group collaboration areas. These community spaces could dramatically shift the way that the institute fosters communication both within itself and between itself and the university. It is time once again to expand the cottage to optimize its function for the current occupants.The original expansions to the cottage (darker red) involved a simple filling in of already existing spaces. For the next phase, the addition will create another layer around the outside of the original house. This new layer (light red) will accommodate all of the new program elements required to optimize the space for collaboration. Modern ADA and code requirements demand a new vertical circulation tower (solid red) which accounts for the shift of the new spaces to the west. As a tree grows rings with age, the Ihlseng cottage will expand by adding layers around the outside.Major public elements of the building, for example the large performance/lecture area are defined by a wall system consisting of structural columns with a set of operable louvres in between. This allows the occupants to adjust the amount of light, heat, and privacy that these spaces receive. The louvre system also allows the cottage to open up practically all of its walls and communicate with people outside of the institute.