As New York and Paris began to modernize, new modes of entertainment, such as panoramas, dioramas, and photography, seemed poised to take the place of the more complex forms of literary expression. Dioramas and photography were invented in Paris but soon spread to America, forming part of an increasingly universal idiom of the spectacle. This brave new world of technologically advanced but crudely mimetic spectacles haunts both Whitman's vision of New York and Baudelaire's view of Paris. In New York-Paris, Katsaros explores the images of the mid-nineteenth-century city in the poetry of both Whitman and Baudelaire and seeks to demonstrate that, by projecting an image of the other's city onto his own, each poet tried to resist the apparently irresistible forward momentum of modernity rather than create a paradigmatically happy mixture of "high" and "low" culture.