Sammamish

Halloween Happening: 3-5 p.m., Oct. 31. Trek through Sammamish City Hall for a fun, safe and dry trick or treat adventure. Appropriate for all ages — come in costume, if you dare.

Issaquah

Fall Fun Fest: 6-8 p.m. Oct. 26. Participants can wear their costumes and enjoy activity booths, face painting and prizes! $2. Issaquah Community Center, 301 Rainier Blvd. South, Issaquah. www.ci.issaquah.wa.us

Bellevue

Spook Fest: All day, Oct. 19-20 at South Bellevue Community Center. Haunted Indoor Miniature Golf, Fri., Sat. 8-11 p.m.; The Great Pumpkin Race, Sat. 10 a.m. to 2 p.m.; Spook Fest Pancake Breakfast with Kimmie the Witch, Sat. 8:30-10 a.m.; Zumba Fitness Halloween Party, Fri. 7-8:30 p.m.; Drop-In Halloween Miniature Golf, Sat. 9 a.m. to 5 p.m. and Sun., 10 a.m. to 2 p.m.

Kenmore

Bastyr University’s Haunted Trails: 7-11 p.m. Oct. 19-20. $20. Bastyr University, 14500 Juanita Drive NE, Kenmore.

Kirkland

Pee Wee Monster Bash: 10 a.m. to noon, Oct. 26. Kirkland’s “cool ghouls” pre-kindergarten creatures are invited to the 10th annual Pee Wee Monster Bash Carnival. It will be a “spooktactulary” fun time for costumed-critters ages 5 and under accompanied by an adult. $10.95 residents or $13.14 non-residents. North Kirkland Community Center, 12421 103rd Ave. NE, Kirkland. www.explorekirkland.com

Mercer Island

SENSELESS: Mercer Island’s Haunted Forest: Through Oct. 28. A 40-minute guided performance and tour through the shadowy and frightening trails of Mercer Island’s Island Crest Park. $15.

Renton

Dark Hollow Haunted Forest: 7–11 p.m. Oct. 19-20, 25-27. “Two Themes. One Trail. Zero Chance of Survival.” $15. Family Walk, Oct. 20, 27 (non-scary), $5. Royal Arch Park, 20821 Renton-Maple Valley Hwy. SE. Renton. www.darkhollowhaunt.com

Boo Carnival: 10 a.m. to noon, Oct. 27. Spirited fun for children ages 8 and under. Admission fee required. Renton Community Center, 1715 Maple Valley Hwy. www.rentonwa.gov

Downtown Trick or Treat & “Olde” Fashion Halloween Party: 11-4 p.m., Oct. 27. Ghoulish games, freaky fun and food. Wear your costume or make one here and have your picture taken with our festive characters. Downtown Renton, between Second and Third across from Uptown Glassworks. www.rentonwa.gov

Nearby

Federal Way

Fright Fest: Wild Waves Theme Park gets its Halloween on each weekend in October. In addition to rides, there’s the Movin‚Äô 92.5 Scream Factory Haunted House. 36201 Enchanted Parkway S., Federal Way. www.wildwaves.com

Seattle

Waterfront Trick-or-Treat: 11 a.m. to 5 p.m. on Sunday, Oct. 26. Over 15 participating businesses from the Ferry Terminal to the Olympic Sculpture Park. Free.

Teatro ZinZombie: One night only – Saturday, Oct. 27, prizes handed out for the most creative costume. 222 Mercer St., Seattle. www.dreams.zinzanni.org/

Underwater Pumpkin Carving: October 27-31 at Seattle Aquarium, Pier 59 – Waterfront Park, Seattle. www.seattleaquarium.org

Halloween Night Tour at Seattle Underground: Oct. 31. An adult-oriented guided tour of Seattle’s underground Underworld replete with the tales of graft, opium, sex, debauchery and Red Light district shenanigans that made Seattle what it is today. 608 First Ave., in Seattle’s Pioneer Square, between Cherry Street and Yesler Way. 206-682 4646

Pumpkin Dash Fun Run: Fun run/walk around Green Lake. 8-10:15 a.m. Oct. 28. Start and finish at the Bathhouse Theatre at Green Lake, 7312 West Green Lake Dr. N., Seattle. www.zoo.org/pumpkindash

Seattle Children’s Museum: A week’s worth of Halloween activities like BYOP pumpkin carving and a costume carnival. Seattle Children’s Museum, 305 Harrison St, www.thechildrensmuseum.org/more-halloween

2012 Kube 93 Haunted House at the Georgetown Morgue: Oct. 19-20. Times vary by day. $18-$28. Georgetown Morgue, 5000 E. Marginal Way South Seattle. www.seattlehaunts.com

Tacoma

Zoo Boo: Put on your best costume and join us for a fun, fall-themed weekend at Point Defiance Zoo & Aquarium in Tacoma. Oct 20-21. www.pdza.org/calendar