The objective of this invention is to enable a rapid construction of affordable, disaster-resistant real estate structures. Inventors present a building block construction of an ornamental shape and design as described herein, a corresponding interlock system, and a method of assembling novel structural elements and elements of known design into a cohesive building structure. The novel construction blocks, interlocks and panels form a cooperatively organized communicating chamber for receiving a cement-based substance, for example a cement-based concrete or mortar mixture, hence comprising a monolithic building structure.