The document discusses key aspects and figures of modernist architecture between the early 20th century to the late 20th century. It covers principles of modernism like "form follows function", use of new materials, and emphasis on clean lines. It profiles influential modernist architects like Frank Lloyd Wright, Le Corbusier, Mies van der Rohe, Oscar Niemeyer, and others. Some of their most notable works are mentioned, including the Robie House, Fallingwater, Seagram Building, and more recent landmarks like the Pompidou Centre and World Trade Centre.