Born out of the drawingbuilding.org online archive, Architectural Inventions presents a stunning visual study of impossible or speculative structures that exist only on paper. Soliciting the work of architects, designers, and artists of renown as well as emerging talents from all over the world Maximilian Goldfarb and Matt Bua have gathered an array of works that convey architectural alternatives, through products, expansions, or critiques of our inhabited environments. From abstract and conceptual visual interpretations of structures to more traditional architectural renderings, the featured work is divided into thematic chapters, ranging from  Adapt/Reuse to  Clandestine,  Mobile,  Radical Lifestyle,  Techno- Sustainable, and  Worship. Along with arresting and awe-inspiring illustrated content, every chapter also features an essay exploring its respective themes. Highlighting visions that exist outside of established channels of production and conventions of design, Speculative Structures showcases a multiplicity in concept and vision, fantasy and innovation.