Redwoods, a submarine and a zoo you reach by the deepest transit station in the country.
Oregon Zoo
In Washington Park, reached by a MAX station 260 feet underground, which is half the fun. Ages two to ten, and a concert lawn in summer.
OMSI science museum
Riverside science museum with a planetarium and a real submarine you can walk through. Ages four to twelve; the sub is tight for the claustrophobic.
Washington Park gardens
The Rose Test Garden is free and enormous, the Japanese Garden is paid and calm, and a playground sits between the two. Any age.
Multnomah Falls
Thirty minutes east in the Columbia Gorge. A paved path reaches the bridge in ten minutes, suits ages four upwards, and needs a timed permit in summer.
Rain plans and early dinners
Nine damp months mean an indoor fallback every day. Most breweries here welcome children until early evening, and cart pods solve the fussy-eater problem outright.