The apartment is located in an early twentieth-century building and is split up in the same way in which apartments of that time period were: a three-room living space opening onto the street with the bedrooms and kitchen opening onto the courtyard. The long, narrow kitchen was at the rear of the apartment and could only be accessed by a long hallway. The clients’ first wish was to divide the apartment into two apartments: one for them and one for their two children in college, with separate entrances. The clients also wanted a more contemporary apartment, while keeping the classic structure of the existing one. The first idea was to create the kitchen using one of the three rooms of the living space and to put it in perspective with the two other rooms: an office-library and a living room with bookshelves to display the clients’ pre-Colombian art collection. Hallways were removed whenever possible. The office-library and kitchen are separated by a thick wall made of plaster and oak, creating storage space on the kitchen side and on the other, bookshelves, a desk, and two large oak sliding doors. All of the doors inside the living room were given large oak frames. The materials chosen for all interventions were natural oak, varnished oak, and metal. The kitchen was custom designed and has stained oak cladding with Corian® countertops. Certain walls have been painted different colors in order to accentuate the perspective and create more depth and different atmospheres, depending on the side from which they are looked at. Special attention has been given to storage space, which has been created in the thickness of the walls and doorframes. The bathroom is made of sandstone ceramic, which has been made to look like marble and marble mosaics, pure and white. The children’s apartment has been done in a more fun, contemporary way. A metal frame with frosted-glass windows separates the kitchen from the bathroom. The floors are covered with tiles with geometric patterns that sometimes run up the walls to create optical illusions.