The multifarious architecture of the United States has sometimes been daringly innovative; at other times, banal and reductive. Likewise it is, even now, the product of exceptional individuals (Louis Sullivan, Louis Kahn, Frank Lloyd Wright, Frank Gehry, as well as many lesser-known architects) and more anonymous members of political administrations, financial institutions, the construction and real estate industries in addition to various clients and community groups. How do they work, together and in opposition, to create American architecture, in both its exceptional structures and its overall landscape? After all, the 20th century has seen many indigenous building-types become pervasive (the skyscraper, suburban house, shopping mall, movie theatre, and corporate scientific lab, to name just a few), not only across the continent but throughout the world.