In the fundamental monograph of the creatively, unconventional Dutch researcher Hans Ibelings, the architecture of the 20th century is considered comprehensively - the author's attention does not focus on the architecture of mainly Western Europe. Considering architectural styles and directions, he draws many parallels between the work of masters from different countries and regions of Europe. The book contains a critical sketch of the main works on the history of European architecture. The last four chapters are devoted to the pre-war, interwar, post-war and modern periods of architecture development.