Who said that concrete is a cold and remote material? For those non-believers take a look into Concrete House II by A-cero Architects which is determined to convince you about the opposite! A-cero presents one of its latest works about a big single-family house. It takes place in the outskirts of Madrid on a 5000m2 plot. It is a single storey building and it has a 1.600 m2 built surface.