n Chamber of Chills — Take a frightening stroll through the Chamber of Chills or a spooky Haunted Hayride. May be too scary for small children. Contra Costa Fairgrounds, enter at L and 18th streets, Antioch. General $8, hayride $3. Dates and times at www.ipmascots.com/chamberofchills.

  • Smith Family Farm Pumpkin Festival — Take a hayride to the pumpkin patch and pick a pumpkin. Other activities include a corn maze; barn yard animals; a country-style "hoe down;" music in the picnic area on weekends; Miwok Indian village and more. Weekdays $8, weekends $9. 4430 Sellers Ave., Brentwood. 925-625-5966 or smithfamilyfarm.com/pumpkin.html.

  • Century Plaza Halloween Spooktacular — 10 a.m.-noon. Oct. 25, Century Plaza Shopping Center, 4401 Century Blvd., Pittsburg. Free movie at Brenden Theaters, children's rides, face painting, balloons and trick-or-treating at participating businesses. All children 12 years and younger, in costume and accompanied by an adult, are welcome to participate. 925-432-7301.

  • Creatures of the Night — 2 p.m. Oct. 25. Halloween is near, so get ready for things that go bump in the night. The Oakland Zoomoblile will bring some nocturnal animals to the Pittsburg Library for a visit, 80 Power Ave. 925-427-8390.

  • Hometown Halloween — 5-8 p.m. Oct. 25. Little goblins, wear your costumes and visit downtown merchants for goodies and toys. Oak and First streets, Brentwood. Sponsored by Brentwood Chamber of Commerce and local businesses. 925-634-3344.

  • Halloween on Hollow Hills — 1-4 p.m. Oct. 25. Games, crafts, scavenger hunt and more. Explore the history of the hills and meet some of the park's creepiest critters. Black Diamond Mines Regional Preserve, 5175 Somersville Road, Antioch, Parking fee $5. Disabled accessible. 888-327-3257, Option 3, Ext. 4506, or www.ebparks.org/activities/events.

  • Discovery Bay Halloween Festival — 4-8 p.m. Oct. 26. Haunted bus, face painting, snacks, games and prizes and activities. Kids can trick or treat at 50 business booths. Sandy Cove Shopping Center, 14840 Highway 4. Sponsored by the Discovery Bay Chamber of Commerce and local businesses. 925-240-9966.

  • Look Back in Horror — 7 p.m. Oct. 30. Writing coach Les Rae will guide you through a lighthearted look at the history and enduring mystery of ghosts, creatures, witches, vampires, haunted houses and monsters that mess with our minds. Barnes and Noble, 5709 Lone Tree Way, Antioch. Writebackwhen@sbcglobal.net.

  • Halloween Party — 4 p.m. Oct. 31, Bay Point Library, 205 Pacifica Ave. Costume contest, mummy-making contest, scary stories, treats and more. For those ages 10 and older. Call Geneva, 925-458-9597, or visit www.ccclib.org.

  • Treat Street — 5-7 p.m. Oct. 31, 2550 Somersville Road, Antioch. Stroll down "Treat Street" at the Somersville Towne Center. Sponsored by the Antioch Police Department, Tri Delta Transit and Somersville Towne Center.

  • Pittsburg Halloween Celebration — 5-7 p.m. Oct. 31. Pick a pumpkin; participate in or watch the Halloween costume parade; children will trick or treat at downtown businesses and check out the haunted history tour. Railroad Avenue at Fifth Street. 925-432-7301.

  • Free Circus Night — 6-9 p.m. Oct. 31. Hot dog dinner and snacks; trick-or-treating; carnival games for children; rock wall; pony rides and petting zoo; hay rides; a cash cube and new bikes given away every 15 minutes. Harvest Time Church, 2200 Ventura Ave., Brentwood. 925-516-1908.

  • Hallelujah Night Carnival — 5:30-8:30 p.m. Oct. 31. Games, prizes, food and more. Fun for the whole family. Bring a bag of candy to share. Cornerstone Christian Center, 1745 E. 18th St., Antioch. 925-779-2000.