You can't be a Portland tourist if you don't get some of these crazy famous donuts. The Davis street location is usually much less crowded than downtown.
Just one of many vineyards in the region if you have some extra time in the area.
A short jaunt outside of Portland into the Columbia gorge is another Pacific Northwest landmark. Do some light hiking and enjoy the outdioors.
This is a fun place for family fun and learning. We enjoy the periodic "after dark" 21+ nights.
If you're up to take a trip out to the coast, Seaside is a good option. Quaint downtown and plenty of beachy things to do.
Another coastal jaunt. The famous Haystack Rock can be found here as well as tide pools with all sorts of aquatic critters.
One more coastal option. This is where you can find the Tillamook creamery. Cheese samples? Yes please.
This staple of literature takes up an entire city block downtown!