Architect Bevk Perovic completed this modern house in Ljubljana, Slovenia and named it as House D. The concept of the house is intended to fulfill a certain lifestyle desired by the clients. Too many facilities required to be provided in a relatively small area, and the solution is to allocate the large part of the house in the underground. The exterior of this modern house building is somewhat puzzling with its uncommon structure compared to most houses in the surrounding. The architects illustrate the exclusive construction of this modern house as something enigmatic.