The Pacific Northwest has some of the most spectacular scenery in the country. My recommendations:
Quick and relatively easy:
-second Multnomah Falls in the Columbia River Gorge. Easily accessible.
-Washington Park in the west hills of Portland has a spectacular rose garden and views of Mt Hood on a clear day.
-many, many restaurants and pubs in that area/Pearl District. Take your pick.
Longer but unforgettable:
-drive the loop from Portland to Corvallis. Take 26 west to the coast, drive south on HWY 101 (take secondary roads that hug the coast to get the full effect). Continue south through Lincoln City to Newport. FEAST on fresh seafood along the way. The drive is spectacular in many spots, shades of California and HWY 1 from LA to San Francisco. Spectacular!
- if you're so inclined, the camping in the Cascades range is out of this world. Enormous old growth trees, raging rivers, the deep smell of the forest. If you're into the outdoors, fishing, hiking you really shouldn't pass up the opportunity. So different from MN. Still nice that time of year. The rains won't start for another 4-6 weeks. Head out on the Clackamas highway and take your pick. Might be a busier weekend.