Outdoor, Grass, Trees, Wood Patio, Porch, Deck, Back Yard, Shrubs, and Large Patio, Porch, Deck The homeowners wanted a space to accommodate their interests: gardening, looking after their ducks, or relaxing in the shade provided by the canopy of trees on the property.  Best Photos from This Triangular Tree House Adds Whimsy to a Backyard in Australia