What were the artistic achievements in architecture and sculpture in the 20th century?

In the 20th century, a new era of art began. Under the influence of historical processes and political phenomena, many different styles were formed in architecture, painting, sculpture. Buildings in the style of Constructivism and Art Nouveau were popular at the beginning of the twentieth century. Later appeared: organics, postmodernism and deconstructivism. These styles predominated in most of the architectural structures of the time. In the visual arts, the following were widespread: socialist realism, cubism, symbolism, impressionism, etc.