Fuller referred to these buildings as monolithic ferroconcrete geodesic domes. It consists of steel-coated ferroconcrete and a steel superstructure. Architecture is dominated by "vitra-glass" and "ferroconcrete" skyscrapers. The second storeys of opposite galleries are connected by exquisitely designed ferroconcrete catwalks. The biggest is Micrometer, a ferroconcrete and furniture plant. It is a center for the construction industry producing manufactured housing and ferroconcrete articles. The Pinkberry brand has been designed and managed by LA-based branding firm Ferroconcrete. The bridge has now been replaced by a modern ferroconcrete structure. This Roman technique was called "opus caementicium", and eventually led to modern ferroconcrete construction. In 1931, the ferroconcrete "tenshu" was built. It is built of ferroconcrete with eight sixty meter wide lanes. It is made of ferroconcrete blocks, connected by wire fibers into inseparable ferroconcrete beams. The main building has two wings and a tower, and is made of ferroconcrete. The boat, "Usikusiku", was made of ferroconcrete (a fairly common technique in home boat building).