The Phillips Exeter Library was built by architect Louis Khan was completed in 1972, and the building is currently used as a library/dining hall. The exterior of the building is brick and the majority of it is taken up by windows, showing Khan’s love of natural lighting. Like the Salk Institute, it also has very little ornamentation, rather finding beauty in the simplicity and the beauty of the materials. The interior of the library is designed to let in soft light, the large windows bathe the concrete X in sunlight, which disseminates through to the lower floors. This soft light goes well with the silence of the library, allowing great focus and energy to be put into whatever is being studied. The giant circles create an open feeling in the building that spans across the floors, this also allows the soft natural light to reach farther into the interior. They also give the building an organic feeling, and is reminiscent of how a tree brings nutrients from roots splayed out in all different directions, back to the central trunk. This building was designed with the intention of bringing out the beauty of brick and using natural light to create a calming atmosphere and it succeeded on both fronts.