'Usually when people enter a house, they expect the outside to be brought in, but in the Douglas House, the opposite occurs: you are transported outside, over the lake and into the trees. Visitors all depart with an experience they’ve never had before,' says Richard Meier, of his Lake Michigan masterpiece. Stitched onto the sharply gradiated slope of Harbor Springs, Meier's Douglas House is five storeys of architectural drama. Now, it has been given protected status, as one of the homes on the National Park Service's country-wide register of historic places.

But it nearly didn't get built at all. 'One day, I received a letter from a Mr and Mrs James Douglas,' explains Meier. 'They were enquiring if I would sell them the blueprints of the Smith House.' While Meier was not prepared to sell the drawings, he was willing to design a house for them along similar lines. They accepted, and Meier started creating a home for a site that they had purchased in northern Michigan. As it happened, the developer who had sponsored the site insisted on reviewing the design of any house that would be built on it. 'He asked me to submit photographs of my work, whereupon he immediately refused to permit a house designed by me since it did not have the prerequisite classic pitched roof. To my delight, the Douglases responded to this impasse by promptly selling the plot and looking for another site, and that was the beginning of a very gratifying collaboration.'

From here, Douglas House, as it became known, took shape. Similar to Smith House in colour and materials (wood frame, steel columns, glass), the new structure differs in its architectural make-up, due to the sheer gradient of the slope it clings to. The home is entered at roof level, where stunning westerly views are framed by stainless-steel smokestacks, and enjoyed by a roof deck stretching the length of the building. Lower levels are accessed by dizzying external staircases, which appear to levitate on the landscape. The house's five distinct levels are traced in the mullions of the glazing, reflecting the lines of the shoreline, lake and the distant horizon.

Now, thanks to its new status on the National Register, this residential rarity will be preserved to impress future generations – pitched roof or otherwise. 'We are deeply honoured by this historic distinction of the Douglas House,' Meier concludes. 'With all of the changes that are taking place in the world today, it is important that architecture continues to move us aesthetically, as great architecture always has.'