The twisted minds at ScareGrounds PDX present three bone-chilling haunted attractions at Oaks Park, 7805 S.E. Oaks Park Way, Portland, from Sept. 30 through Oct. 30. ScareGrounds is open Fridays, Saturdays and Sundays, plus Oct. 26, 27 and 31. Experience The Silver Scream, Grimthorne Manor and The Complex haunted houses, plus dodge monsters on the midway as you enjoy Oaks Park’s rides, mini golf, games and roller skating. Rides open at 6 p.m. and haunted houses open at 7 p.m. Haunted house ticket prices range from $18 to $33. Add a Ride Bracelet to your haunted house admission ticket when you buy online and save $5. See a free fireworks celebration at 7 p.m. Oct. 31, Halloween night. Visit scaregroundspdx.com for detailed haunt descriptions and to purchase tickets.