Washington has several theme towns. I'm not sure that is the proper name for them. Towns with a theme. Maybe just calling them Tourist Towns suffices.
Leavenworth is definitely a town with a theme, with that them being a town in the Bavarian Alps, with the Cascade Mountains substituting for the Alps.
Winthrop is another town with a theme, with the Winthrop theme being an Old Western Town. Winthrop came to life when the North Cascades Highway opened a few decades ago. Prior to the highway being built, Winthrop was a very isolated location in Washington. Now it's a major tourist destination.
La Conner, in the Skagit Valley, was a very poor, rundown, sad little town, way back in the 1960s. I don't remember what sparked the change, but the change to La Conner is amazing. La Conner is now a classic tourist town, with galleries, good restaurants, brew pubs, marinas and a lot of visitors.
And then there is Lynden. Lynden is the reason I am from Washington. My Dutch ancestors came to America in the late 1800s. They kept trying to find a place to live that they liked. Further and further west they went. And then they heard of this place in the far northwest corner of America. My great-grandpa was sent, solo, to check it out. He spent a summer, and then returned to his sister, my great aunt Anna, and my great-great grandpa and grandma, Cornelis and Aagie, bringing with him apples, thick bark from a tree, tales of berries growing wild, lush farmland, tall trees and land that reminded him of Holland.
And so they moved to the Lynden area, along with a lot of other Dutch people.
Lynden retains its Dutch character, leading many to say a visit to Lynden is like a visit to Holland without needing a passport.
When you visit Lynden you can't help but notice that there seems to be a lot of churches. And the lawns are all immaculately kept. Lynden may be the most litter free town in America.
I am likely forgetting a Washington theme/tourist town or two. Of all of them, Leavenworth is my favorite.