When we went to sea fair last week, I spotted a strange huge boat in Lake Washington on the Mercer Island side.
It looks like a huge yacht but very flat, what is it? I did some search...
End up I found this place is actually Microsoft cofounder Paul Allen's home. His home has a number of buildings.
This is the satellite view and that boat was there.
This giant boat is actually the billionaires' helicopter landing pad.
He didn't get permit to build a helipad on the land so he got a boat as helipad.