The Guardians at the Gates: Completing Unfinished Monuments Through Video Projection: The two monuments at Columbia University’s 116th Street Broadway Gate, Letters and Science, were class reunion gifts from the Classes of 1880 and 1900. On the opposite side of campus, a parallel proposal for monuments titled Arts and Philosophy was never realized due to the Great Depression and World War II. Only two foundation columns were built. However, with the names Arts and Philosophy, these empty columns have become monuments in their own right, representing both absence and presence. This project uses video projection to complete the unfinished monuments and initiate a dialogue between disciplines, history, and the present.