Oregon Museum of Science and Industry is an incredible resource, with much to entertain and possibly educate children of all ages. Unfortunately, everyone else is already aware of this fact.
The museum is open 9:30-5:30 except for Christmas and Thanksgiving days. Full details.
If you find any factual innaccuracies in this post, please email me via richard at thingstodoinportland dot org so I can fix it for everyone. Thanks in advance!
1945 SE Water Ave Portland, OR 97214 [Google map].
The good people of Yelp have posted 512 reviews of OMSI with an average rating of 4 out of 5.