The Great Room is a large room, located on the southwest wing of the residence. Outside the curved end, one is able to see the remarkable gardens and pool area of the residence. The Great Room is a rectangular room with a curve on one end of the room. This large space is very open with it’s high ceilings, and lots of decorative forms. The entrance into the Great Room can be accessed north side of the room. An individual must walk through the Loggia to enter the Great Room. Once an individual walks into the great room, they will notice important architectural features such as the eight pillars toward the back of the space, as well as the decorative motifs on the ceiling. When entering the Great Room, there is a connection made between the Great Room and other spaces within the residence, such as the Loggia. Both spaces have a very decorative ceiling, and use a variety of materials and finishes.

The flooring in The Great Room changes throughout the decades . In the 1930s, it begins as a carpeted room from wall to wall. In later renovations, it was changed to all wood flooring. It is then decorated with lots of rugs to give off the impression of different meeting spaces. The walls are artificially painted with a sponge-like pattern. The ceiling is painted a dark green to represent the original design with dark beams and gold leaf motif. The Great Room has a variety of lighting, such as, recessed lighting, chandeliers, wall sconces, and lamps/ Although the lighting is not original, it is in the process of being restored.

The Image to the right is a picture of Ambassador/General MacArthur and Emperor Hirohito. This is the first depiction of  a Japanese  Emperor being shorter than someone else. This image is currently on display at the residence.