Local community centers will open for free or low-cost Halloween activities this year for trick-or-treaters of all ages.

Discovery Happy Halloween Hike

Wear your costume for a hike discovering the animals of Halloween.

Saturday, Oct. 26, 10:30-11:45 a.m.

Code for registering on-line at www.seattle.gov/parks: #105248

Wednesday, Oct. 30, 10:30-11:45 a.m.

Code for registering on-line at www.seattle.gov/parks: #105249

Discovery Park Environmental Learning Center (3801 Discovery Park Blvd.)

Free; for ages 2-3, with adult

Fort Lawton Cemetery Adventure

Join a volunteer naturalist for a guided adventure in the cemetery at Fort Lawton. Hearstories about Fort Lawton (fort name for what is now Discovery Park) and the days when it was a prisoner-of-war camp. Children must be accompanied by an adult.

Saturday, Oct. 26, 2-4 p.m.

Discovery Park Visitor Center (3801 Discovery Park Blvd.)

Free; appropriate for age 12 and older

Code for registering on-line at www.seattle.gov/parks: #105074

Queen Anne Fall Tot Carnival

Have the tots try on their Halloween costumes and join in some pre-Halloween fun. This mini carnival will have games and treats. Costumes are optional but encouraged.

Tuesday, Oct. 29, 10 a.m.-1 p.m.

Queen Anne Community Center (1901 First Ave. W.)

$3 per tot

Magnolia Li’l Spooky Things

Get the little spooky ones dressed for a Halloween morning of treats, pumpkin decorating, games and lots of bouncing around. Costumes encouraged.

Thursday, Oct. 31, 11 a.m.-1 p.m.

Magnolia Community Center (2550 35th Ave. W.)

$3 per child (age 4 and younger)

Magnolia Pumpkin Carving

Thursday, Oct. 31, 6-8 p.m.

Magnolia Community Center (2550 35th Ave. W.)

$3 per child (all ages); bring own pumpkins