The document provides an overview of developments in art from the modern to the postmodern era in the late 20th century. It discusses the emergence of site-specific and environmental art in response to ecological concerns. It also examines new organic and fluid forms in modernist architecture by architects like Frank Lloyd Wright, Le Corbusier, and others. Finally, it outlines key characteristics of postmodern art like the inclusion of traditional elements, historical references, and self-consciousness, as well as the political and social commentary inherent in much postmodern work.