This is the first of a series of occasional reports that will focus on special problems related to major works of world architecture. In these reports, scholar-experts will be asked to give an account of the state of a work of architecture or a historical problem. In this report, Jack Quinan views Frank Lloyd Wright's Guggenheim Museum in relation to the new addition by Gwathmey Siegel and in the context of Wright's career as a whole. Quinan shows how the spiral was rooted within Wright's consciousness from his earliest education in Unitarianism and transcendentalism. The spiral represented the geometric shape of utmost importance to Wright, one which he frequently tried to include in his architectural designs. Quinan argues that the Gwathmey Siegel slab represents an unsympathetic response to Wright's greatest spiraling form, the Guggenheim Museum.