If you have any interest in going slightly off the beaten path, we really enjoyed
Whidbey Island - we spent a lot of time wandering in the dark old tunnels/bunkers. We also stopped in Bremerton and toured the
USS Turner Joy and we went to this little naval museum somewhere in Bremerton - I don't recall what it was named and I don't seem to be finding it online anywhere. Perhaps it closed or all the stuff was moved into the newer, larger Naval Museum there. Anyway, we found it very interesting but maybe we're a bit nerdy that way, lol.