Explore the realm of science and the world of industry at the Oregon Museum of Science & Industry. The exhibits and attractions here bring various aspects of both subjects to life. Check out features like the planetarium, the Turbine Hall, the Life Sciences Hall, the Science Playground, and the OMNIMAX Theater.
Explore the habitat of some of Portland's native wildlife at the Tualatin River National Wildlife Refuge. The refuge is home to a variety of creatures, including about 200 species of birds, 50 species of mammals, and 25 species of reptiles and amphibians. Be sure to check out the exhibits at the Wildlife Center to learn a little more about the wildlife you'll see as you venture through the outdoor preserve.
If you've seen the Portland skyline, then you've seen the St. Johns Bridge, and sure, you may have even driven over it. But forget the wheels; get your walking shoes and cross the bridge by foot, as many locals have suggested. A good workout and a beautiful view from an historic bridge will prove to be a highlight of your time spent in Portland.