Her passion for the beauty of the natural environment spoke to the owner of a house as open to the immediate and distant landscape. She also was afflicted with multiple chemical sensitivities and that condition demanded an open unrestricted space. Both combined to form a house without walls, with only glass between interior and exterior, tall enough to view the mountains, close to forest floor. Our solution was a grid of steel tubes into which were inserted platforms, individual “rooms” separated only by different levels, an open space that could have an air exchange of 100% per hour. It also provided unbroken experience of surrounding nature; snow floats 10 meters past the glass walls, sunlight and shadow, dusk and dawn inform her living. Hawks perch atop the house, foxes peek through the windows.