The evolution of the undulating wall

Expressive buildings based on curvilinear geometry became one of many characteristic elements of contemporary architecture. A fascination with irregular, undulating forms has already been visible in the 20th century. However, the sources of the undulating motifs go back to the Baroque period, when buildings with curved façades were one of the best examples of the natural development of architectural thought. The evolution of this idea took place at the beginning of the 20th century. In the following years, the motif of the undulating lines was used by many architects who draw upon its regular or free character. The Authors using the analytical and interpretative method show the evolution of the undulating wall. The Authors use the terms of curved lines defined by Kandinsky. The analysis of selected examples shows the ideological, material, and constructional evolution of the undulating wall, as well as the way of transforming the idea of the undulating line, which returns to its baroque roots, but in a more modern version.