Architecture in 1920’s The 20th century means a radical change in architecture trends and art, due to a huge technological and social era changes. The emergence of modern architecture was characterized by a great rupture between university students and young architects of turn of the century. The first taught in fine arts institutions was based on conservation and use of classic styles like a second great opportunity in industrialization and new technologies to develop new ways of expression and thought.Everyone thinks of New York when they hear “skyscraper, this trend actually began in Chicago, after the Great Chicago Fire in (Sunday 8 October to early Tuesday, October 10, 1871), where mostof the city was burned, for this reason American architects began to rebuild the city.Since that time, Louis Sullivan, one of the most prominent members of the "Chicago School of architects" coined the phrase "follows function isa mantra for the modernists”. Sullivan and his contemporaries built newmagnificent and amazing skyscraper, soon became one of the most important characteristic of the bigcitiesin the world.This revolution in the field of architecture and the art world, had as its home, TheGerman School "Bauhaus" and its main development was the modern movement linked to the Congress International of Modernarchitecture (1928-1959), with bigdifferences, marked by two major trends: 1) Rationalist and organicist functionalism 2) Architectural rationalism and architectural organisms. This concept of modern architecture understood as not chronological and contemporary architecture is characterized by the simplification of forms, the absence of ornament and conscious renunciation of classicalacademic composition, which was replaced by the aesthetic with references to different trends of modern art (Cubism, expressionism, Neo-futurism, Constructivism, Modernism, art Novo, art Deco, etc.).Art Deco was the name that receives an architectural style, the design of influential Visual Arts to consolidate this style emerged in France in the period subsequent wars to II World War , when industrialization was transforming the culture and began to spread to other countries from the 1920s to the 1940s,and then,his popularity declined after the IIWorld War. It is an eclectic style that combines traditional craftsmanship withmaterials and images of the most modern machinesof that era. The style is characterized by luxurious ornamentation, often geometric bold and colorful ways. Art Deco is distinguished by the use of industrial materials such as metal, chrome, plastic and used as its predecessor the "Art Nouveau" using organic motifs. In this period of history represent this style glamor, luxury, exuberance, and faith in social and technological progress.The historian, Bevis Hillier defined as a modern Art Deco style as assertively to symmetry instead of asymmetry and straight rather than curved, so responding to demands of modern machine and new material requirements for mass production.But it was mainly structural steel, reinforced concrete, plastics and glass; which prevailed in the transition from traditional processes for the industrial production process and the implementation of related technologies, all this compendium laid the foundations for a new form of expression that was decisive in the global architecture and forever changed shaped design and construction of buildings or spaces for daily life and human activity.