Office, Chair, Shelves, Bookcase, Rug Floor, and Library Room Type Architect Gustavo Costa calls the home library the “project’s heart.” This central space houses the owner’s expansive collection of about 5,000 books, and acts as a meeting place for friends and colleagues. A Gerrit Thomas Rietveld Red and Blue chair completes the space.  House of the Week: Indoor-Outdoor Brazilian Modern Home  by Luke Hopping