The building, a typical London terraced house dated 1851, was made up of four floors closed between the blind walls of a deep lot. This caused two problems to the owners: a strong deficit of natural light and a rigid and very fragmented internal organization. The project, compared to the original volume, has added a basement and, at the back, a double height window that embraces the living room and the dining room. But the main change, which sets the character of the entire project, is the opening of a void space, almost a covered miniature patio dug in the centre of the house: as in Baroque churches, the interior is characterized by a surprise effect based on the unexpected flood of natural light that, coming from above and grazing the skilfully shaped walls, enhances the sculptural character of each architectural element.