Prior to leaving Washington state we visited Tree house point.  This is a bed and breakfast run by Pete Nelson from the TV series Treehouse Masters (we are big fans).  There are six treehouses you can stay in to experience being in the trees.  We were not able to get a reservation to stay in one of the treehouses in the time period we had but we were able to take a tour.  "TO THE TREES!" as Pete says.

Temple of the Blue moon

Bonbibi

The Burl

The Nest

Trillium

Upper Pond