OK, here's the scoop: the one on NW 23rd NOW is the old counter-only store that used to be on NW 20th. I guess they have moved the one from Pioneer Place into the Wells Fargo building.
Mall 205 has always been Mall 205--because it is next to I-205. Believe it or not, I played the gala opening of the new Target store there about a year ago. Nothing like schlepping a keyboard and sound system to a Target and setting up in the credit card acceptance area, playing "Feelings" whilst people bitch about their new credit limits. Memories, pressed between the pages of my mind.
And, finally TCB, you're close, but not really--Washington Park is in SW (i.e., South of Burnside), not NW. But, indeed, if you were to drive south on 23rd over Burnside and up the steep hill, then turn right on SW Park St. (aptly named, wouldn't you say?), you would, verily, come to the entrance of Washington Park. Forest Park (which abuts Washington Park, no mean feat) is the big park in NW (the biggest park in a metropolitan area in the US, IIRC).