West County

Bring your little ones to enjoy a nature adventure. This outing is perfect for kids ages 2-6 with a parent or caregiver. Reservations are required.

This adventure begins with a hike with a naturalist to a special place in the forest. Then you'll enjoy stories under the canopy. Siblings are welcome. Reservations are required by calling 314-301-1500.

10 to 11 a.m. Free. At Powder Valley Conservation Nature Center in Kirkwood, near the intersection of I-44 and I-270.

More information and reservations: mdc.mo.gov

Bring your little ones for some Halloween fun making crafts, bobbing for pumpkins, watching It's The Great Pumpkin Charlie Brown and having some fun in the indoor pool. For kids ages 3-6 with a parent or guardian. Don't forget your swim attire for an hour of play in the tot pool! 

Oct. 31 from 9:30 a.m. to noon. Registration is required by Oct. 24. 

More information and to register: desperesmo.org

Children can trick or treat in costume at participating downtown Kirkwood businesses. 

Children can trick or treat from 5-7 p.m.

More information: downtownkirkwood.com

Parents can enjoy a fun night out while kids are swimming, painting pumpkins and eating breakfast for dinner at this Kids Night Out at the Chesterfield Family YMCA.

For kids ages 5-12. Cost is $15 per child for members, $20 per child for non-members. Sibling discounts are offered. Registration is required.

5:30 to 10 p.m.

More information and registration: gwrymca.org

Kids can work on existing gym skills, learn new skills or just play around during Open Gym at Miss Kelly's Gym.

Open Gym is held several times each week. Mondays at 7:30 p.m., Thursdays at 10:45 a.m. and Fridays at 11:30 a.m. 

Each open gym session lasts one hour and is open to members and non-members ages 12 and under.

Free for members; $8 for non-members. Children under age 1 are free. Call for more information: 314-439-1100 or email tumble@misskellysgym.com

More information: www.misskellysgym.com

Miss Kelly's Gym in Creve Coeur will hold a Parents Night Out on Friday, October 20. Let Miss Kelly's give you the night off while your child takes part in many different fun activities, including games, obstacles and challenges!

6 p.m. to 9 p.m.

For children who are age 3 and up and potty trained. Space is limited and reservations are requested. Call 314-439-1100 or email tumble@misskellysgym.com. $20 for members; $25 for non-members. All siblings are half price.

More information: misskellysgym.com

Kids ages 4-11 can have fun with their friends at the J's Saturday Night Party Zone. They'll swim, make crafts, enjoy snacks and a picnic dinner, and watch a movie.

5 to 10 p.m.

Cost is $22 for members and $26 for non-members. Additional siblings are $13 for members and $17 for non-members. $5 additional fee if not registered by the Wednesday prior to the scheduled Party Zone.

• Oct. 7, Nov. 4, Dec. 2 and January 6 at the JCC Staenberg Family Complex in Creve Coeur.

More information and online registration: jccstl.com

Step into the wonder and beauty of butterflies, insects, spiders and their other many-legged friends at the BOOterflies Ball!

Your little bugaboos will be able to play games, create spook-tacular crafts and take home lots of loot after they visit the many hand-painted Treat Houses. Families can dance to Monster Jams at the Ugly Bug Ball or spy on the amazing Owl Butterfly, which are only active during dusk and dawn.

Admission into the Butterfly House, activities, light refreshments, crafts, treats and goody bags are included in the event ticket price. Space is limited and reservations are required. Cost is $14 per person, $12 for members of the Missouri Botanical Garden, and free for infants 12 months and younger.

More information and to register: butterflyhouse.org

The Butterfly House becomes The BOOterfly House this October to celebrate all things creepy and crawly. Kids can spy on spectacular spiders, enjoy daily story times with Miss Muffet and see Live Carnivorous Plant feedings.

Meet new frightful friends in the Scorpion's Lair, watch out for Botanicals Gone Mad in the Conservatory and spy on spectacular spiders with Little Miss Muffet!

The BOOterfly House activities are happening during October (Tuesdays through Sundays) at The Butterfly House in Faust Park. 

Story time with Miss Muffet happens daily at 10 a.m. Live Carnivorous Plant Feedings are held at 1 p.m. The Butterfly House is closed on Mondays. BOOterfly House activities will be held 10 a.m. to 3 p.m. Tuesdays through Sundays through Oct. 31. All events are included with admission.

More information: butterflyhouse.org

Attention pet owners! Bring your pets to strut their stuff at the Ballwin Halloween Pet Parade. Dogs, cats, turtles, fish . . . if you have a pet you can register them. There will be prizes for the best pet costume and the best pet/owner costume combo.

Cost is $3-$5 depending on residency. 2-4 p.m. at Vlasis Park.

More information and to register: ballwin.mo.us