This paper presents selected examples of interaction between architecture, iconography and theology in contemporary Orthodox, Greek- and Roman-catholic and Evangelic sacred architecture built after World War II period in Poland. It also shows the process of evolution of traditional spatial and functional structures and applications of new iconography conventions in the Christian temples. It covers problems in art as well as new essential ideological aspects of symbolic and liturgical nature. Examples of modern churches seem to prove separation tendencies of Christian Churches and cultures are now being reversed, which is not only a symptom of mutual dialogue, exchange of ideas, values and different forms of worship, a symptom confirming an authentic will of ecumenical unity in art. Those examples are representative for the architecture of cultural borderland, which attempts to synthesize both Western and Eastern Christian art. The art through ages of its history on earth has journeyed a long way, both through time and through space. It still does. It is an object of cult. It is a testimony of Incarnation and the mystery play of presence. It is the path to salvation.