Looking for cool and interesting (preferably spooky) facts about Portland!

Running a Dresden Files RPG game for some friends and we're setting it in Portland, Oregon. None of us have ever been to Portland, however, so we're doing a bunch of research on the city but I was hoping some Portland redditors might know of some urban legends, spooky sites, or anything really cool that could easily have a supernatural twist thrown on it =D Any and all ideas are appreciated!

Thank you very much, Portland Redditors!