Exterior, House Building Type, Flat RoofLine, and Concrete Siding Material “Simple rectangular  volumes with simple details” is how designer Thomas Egidi describes the house he created for architect Carlos Dell’Acqua in Malibu. “I wanted to stress its horizontality,” Dell’Acqua notes. Inside the dwelling, which is entered via a bridge that pierces the 25-foot-high main facade, the view  opens up to a panorama of mountains and sea. Ipe flooring is used for the walkway and throughout the interior.  Photo 23 of 25 in 25 Modern Homes That Kill it With Concrete from Facing the Elements