 The other is the 1929-vintage administration building, located on its original location, just south of the Terminal 115 site at 200 Southwest Michigan Street, Seattle.In 1909, Edward Heath constructed a wooden boat shipyard on an oxbow meander of the Duwamish River.Heath soon became insolvent, and William Boeing, for whom Heath was building a hugely expensive and luxurious yacht, bought the shipyard and land for ten dollars, in exchange for Boeing's acceptance of Heath's debts.