The corridors of power, in business and government, lead to heroic interior spaces, and business has frequently appropriated the architecture of power - that is, of government. Interior spaces symbolize as well as contain function. The ambiguous relationship to nature is seen in the American desire to bring a scaled-down outdoors inside; the incorporation of the past takes different shapes. The town square concept reappears in guises as diverse as the great interior space under the Capitol dome and the glazed-over shopping mall that is Houston's Galleria; hotels and museums with indoor plazas seek to provide the same sort of community meeting space. Grand Central Terminal - with twinkling stars painted on its concourse ceiling - is both the nexus of a transportation network and a grand bazaar. The Pennsylvania Academy of Art demonstrates how the effort to combine tradition, function, and the symbols of industrial modernity may wind up a mixed metaphor. It took Frank Lloyd Wright to reconcile the dome of the pantheon and the arcaded market in the Marin County Civic Center.