"Dimensions. Journal of Architectural Knowledge" is an academic journal in, on, and from the discipline of architecture, addressing the creation, constitution, and transmission of architectural knowledge. It explores methods genuine to the discipline and architectural modes of interdisciplinary methodological adaptions. Processes, procedures, and results of knowledge creation and practice are esteemed coequally, with particular attention to the architectural design and epistemologies of aesthetic practice and research. Issue 4, "Essentials of Montage in Architecture", provides a comprehensive collection of theories, methods, and visions to highlight the relevance of montage for visual and spatial practices as well as for knowledge production in architecture.