The book is devoted to those new forms and types of artistic activity that in the avant-garde era significantly change the very configuration of cultural space. Ekaterina Bobrinskaya considers the situation of "violation of borders" from different sides, when, with the advent of collage, assembly, constructivist object, the previous concepts of what "fine art" is are radically revised. Her research combines problematic breadth with detailed consideration of specific plots and events that make up the atmosphere of time.