Spanish architect Javier Peña of Xpiral has completed two houses in Murcia, Spain, with the lower volume built from stacked ceramic wine racks.Called Torreagüera Vivienda Atresada, the project comprises two residences, with one cantilevered above the other.Some of the holes in the wine racks that make up the lower level are plugged with coloured ceramic tiles.Photographs are by David Frutos.