Moosey it sure looks like a lilly to my too. There is a plant collector and co-owner of the Heronswood Nursury near Seattle -name doesn't come to me- who collected seed for and now sells a very large lilly, tall but probably not 12 feet tall. If that is what it is it should be very fragrant too.
In my sunset book they describe a Lilium leucanthum centifolium from China to 7-8 feet tall, with up to 18 fragrant white, somewhat pendulous flowers with purple-red streaks.
Mark in California
Q: "Do you ever sit down?"
A: "All the time until the urge to 'play' some more becomes too strong."