The document summarizes trends in architecture since the mid-20th century, including Innovative Architecture, the International Style, Postmodernism, Deconstructivism, and the works of Frank Gehry. Innovative Architecture combined imagination with new materials like reinforced concrete. The International Style originated from the Bauhaus and featured glass towers. Postmodernism valued individuality and complexity. Deconstructivism undermined stability with warped forms. Frank Gehry is known for his innovative use of materials to create expressive, curved forms.