The proposal for the official residence of the Spanish Ambassador in Canberra is based on the building’s dual condition as a private residence and as a space for public and representative activity. As a result of this dual condition, the construction’s form projects itself as two intersecting twin blocks of diverse scales and architectural features, around a patio that faces the entrance hall. The public part of the residence is in the West wing and it is divided internally in three spaces (living rooms and official dining room). Here, the architecture is singled out by an uneven appearance, which becomes its contact to the outside creating big cantilevers on the outside terrace. The Ambassador’s private home is mainly situated on the top floor of the East wing, with a direct access to the private garden and the swimming-pool, taking advantage of the slope on the plot. Its architecture is calmer, more direct and it only stands out for its volume. The private and the service access are via the high part of the plot, which is separated from the official access. Nature comes into the home through a terrace-garden with a cistern that creates private contact spaces with the exterior at the level of the top floor. Creeping sedum plants are introduced to create a more pleasant environment and act as a barrier against excessive sunlight from the areas located below.