OK, I need to come clean. There's a reason I hiked 25+ miles to Everett on Easter Sunday in the rain.
I did this last year, too. But I forgot to bring my camera.
This lovely home was the object of my obsession. It haunted me in dreams for a year. It is situated on Mukilteo Speedway (WA 525) on the hill descending towards town and the ferry docks to Whidbey. It has a nice view of Puget Sound. Here's a shot from street-level:

Wait a second, what is that gray plane right in front of the house? Can we get a better look, please?

Is it a tennis court? A private runway? A flight deck from a carrier? What remarkable facilities do the nouveaux riches of Mukilteo have at their disposal?

Turning ... turning ... at last! I see now. It's a monstrous, armored
cesspool, full of stagnant water and green sludge. It's fortified like this
to make sure that babies don't fall in.

Maybe I should do my hike again in the summer to see how it
smells!