If you’re just toddling down, as opposed to jetting on I-5, consider taking Chuckanut Drive south out of Bellingham. It’s Highway 11, and it runs right down the coast of the Sound, you’ll see it on a map. Short, too, only a 20 mile or so detour if you want to stick mostly to I-5. When are you coming? Because if you’re interested in secondary roads close to the coast (in other words, “the slow way”), and you’re coming in later spring you, can drive through the Skagit County Tulip Festival (late March - May), when all the commercial tulip fields are in bloom. It’s nothing you have to stop for if you don’t want to, but it’s cool to see the fields. And if you’re into little antique-y towns (and lots of tourists) you can stop in LaConner during tulip time. Kinda fun.
Heading south again, the Boeing Company tour facility is in Everett. It’s way cool, and I say that as a person who doesn’t generally give a rat’s ass about planes.
And further south to Seattle . . . The best free attraction is unquestionably Pike’s Place Market. For cheap(er) clothes, if you like to shop, Nordstrom Rack is right up the street. And Nordstrom proper (and the Bon Marche – sorry, Bon Macy)are just a little further up the street. There’s a fabulous book store in Pioneer Square, the Elliott Bay Book Company. If you want to drive around a bit, there a great view of downtown from a cute little park on Queen Anne (one of Seattle’s seven hills) callled Kerry Park. Another fun free thing to do, though it’s not downtown, is to go to the Ballard Locks. You can watch the boats come through and you can go down to the windows that look out on the fish ladders, though this isn’t the best time of year to see the fish moving through. And Discovery Park is in that same area – a great place for a walk if the weather’s nice. If you have a couple free hours and want a bit of a drive – though road-trippers may not – consider driving out to Snoqualmie to see the Snoqualmie Falls. And I think one of the funnest (most fun?) cheap-ish things to do in Seattle is ride the ferry, like just over to Bainbridge Island and back, though that may not seem like much of a treat to someone from B.C.
Then, if you’re not in a hurry, consider heading north again on Highway 9, which is east of Seattle. You’ll pull through some pretty farmland and some nice small towns but, again, it’s not the fast way to go. I think you end up a good piece east of Vancouver when you cross into Canada, but, hey, from western Washington, basically all roads lead to Vancouver. Anyway, have fun. I think Washington is great, can you tell?