Oregon Zoo
Children's Museum
OMSI
Japanese Gardens/Rose Gardens/Piddock Mansion/Washington Park
Columbia Gorge-Multnomah Falls, any of the falls, Beacon Rock, Bonneville Dam, Hood River Fruit Loop and Train Ride
Silver Falls
Oregon Garden
Hawthorne District ( I love Fat Straw's vegan blended boba tea and there's a wonderful Korean restaurant-lots of great restaurants really)
NW 23 and the Pearl District
POWELL'S BOOKS
Oregon Symphony
Springwater Trail
Newport Aquarium (Cafe Mundo in Newport is lovely)
Cannon Beach (sandcastle competition is fun)
Seaside - any beach really...
Bend has a whole host of good stuff within a couple hours too.
New Season's Markets are awesome
IKEA? LOL
I'm trying to think of more...