The article elevates the problem of studying ornamental forms in architecture. Ornament in the context of deconstructivism seems to be a paradoxical phenomenon, but, nevertheless, its presence is marked by the conceptual texts of deconstructivist architects. The ornament is studied as a formal aspect, the structure of which is able to involve, link and produce a number of essential characteristics that determine architectural shaping. Ornament is interconnected with form, semantic, communicative, and formal aspects that are integrated and localized in the concepts, form, and space of architecture. The research is based on the concepts, manifestations and theoretical research of the deconstructivist architect Bernard Tschumi. The research is aimed at expanding the subject field of ornamental form in the direction of conceptual and structural aspects. The phenomenon of the ornamental form is revealed as a multiplicity of abstract structural equivalents, where the connections between the subject and abstract aspects of the structure of the ornamental form are paradoxically actualized.