Hopscotch is a really fun interactive museum that you can wander around as you sip beverages. They have light installations and a ball pit! Make sure you reserve your time slot in advance (!!)
Birdie Time is a mini-golf experience in Southeast Portland, where you can also play ping pong and corn-hole.
The Gorge is where we got engaged! Many 2-mile-loop waterfall hikes, and stunning views of the Columbia River. It's about a 25 minute drive from downtown Portland, so this requires your own car. Once you get there, parking is free!
Highly recommend: Latourell Falls Hike, Horsetail Falls Hike, Wahclella Falls Hike!!!
Pick your own blueberries! Sauvie Island is a gorgeous island next to Portland, where there's farms and beaches set along the Columbia River.