I've had pretty much non-stop work travel for the past two months and have another packed travel month coming up. I'm supposed to go out to Portland, OR for a daytrip on a Thursday, and I just can't stomach the idea of flying to the west coat and back within 24 hours for the third time in a month. I'm thinking of spending the weekend in Portland and/or Seattle. I've only had the chance to walk around Portland during work travels, and I've never been to Seattle (or actually anywhere in Washington state - it's an odd "hole" in my travels). Any suggestions on things to do, assuming I'd have Friday, Saturday, and maybe part of Sunday free? I don't want to rent a car, and I want to do lower-key things, as I think I'm chronically exhausted from all of this travel (+ various other stresses). Other than that, no restrictions.