The research work analyzes the influence of the post-modernism phenomenon on Lithuanian architecture as observed since the 1970-s. This controversially estimated period in architectural history opposed the modernist tradition by its cultural and aesthetical landmarks. In the Lithuanian context it was distinguished by the raise of its expression partially overlapping with the period of post-soviet socio-cultural fractures. After short introduction of prerequisites of postmodernist idea formation in architecture, the text focuses on the main ideological concepts and characteristic features of architecture related to postmodernism. Besides the evaluation of influence of western postmodernist architecture on the soviet space, the aim of the article is to analyze the objects innovative by their aesthetics, applied symbolism and treatment of their application to the society in the sociocultural context of the time. The text focuses on unrealized projects and competition offers of the 1970-s and 80-s (from the emergence of the first examples to the reestablishment of Lithuanian independence) with most brightly reflected postmodern trends: complex composition, eclecticism, historical references and decreasing scale. The examples analyzed in the research are a part of culture of the complicated transformation time, which is underestimated.