The Jameson Square fountain is so neat and fun. The weather wasn't even all that good when we were there so we weren't able to get wet but it was still lots of fun. There are rocks to stand on and stay dry while the area fills up all around you, and you can always run from the filling fountain like you would the tides at the beach. We had a really fun time playing around and watching the water cycles.
We did not have a lot of time in the Pearl District as we needed to catch our train, but we also checked out Powell's Bookstore and the Pearl Bakery (yummy croissants!) We will definitely check it out again next time we are in Portland. We also went to the Whole Foods right near Powell's to pick up some lunch for the train and use the restroom facilities.
To get there, we took the streetcar and got off at the last stop before leaving fareless square (10th and Glisan)
*Note: I have written a bunch of posts about Portland so if you want to read more, click on the Portland Label at the end of the post, and you will see all the Portland entries.