Things to do with kids in the Boston area this week

10 AM – 11:45 AM·Keys Community Room · Milton

Halloween-themed concert with Franc Graham kicks off the jamboree in lower-level Keys Community Room, followed by trick‑or‑treating and a craft in Story Hour Room, for ages 3–12.

5 PM – 7:30 PM·Grove Hall, Dorchester · Boston

Costume contest, spooky photo booth, crafts, candy, and music fill Grove Hall’s annual HALL‑oween party for all ages.

6:30 PM – 8 PM·Large Meeting Room, Cary Memorial Library, 1874 Massachusetts Avenue, Lexington, MA, 02420

Slightly scary stories and creepy Halloween crafts in the Large Meeting Room, supplies and instructions provided, staff on hand, all ages, children under 8 need adult.

6 PM – 6:45 PM·Polonia Park, 37 Trement Street, Chelsea, MA

Grand Reopening of Polonia Park (Polonia Park, Chelsea) — Modern playground equipment, fenced dog park, shaded picnic area, splash pad, new seating, and fresh trees and plantings.

4 PM – 5 PM·West End, Boston

Esther Gomez leads a Día de Muertos celebration at West End, guiding participants in building an ofrenda, wearing monarch wings, and sharing Pan de Muerto for all ages.

10:30 AM – 11:30 AM·East Boston, East Boston

Costume-clad toddlers dance to Halloween music in East Boston, ages 0–5.

10:30 AM – 11:30 AM·Roslindale, Roslindale · Boston

City Ballet of Boston performs jazzy‑ballet excerpts from Ben’s Trumpet, followed by a book reading and dance lesson from a teaching artist, for ages 3–8.

4 PM – 5 PM·Codman Square, Dorchester · Boston

Explore real Massachusetts animal bones and pet giant bugs at Codman Square, Dorchester; limited to 25 participants, reserve by phone or email, for ages 6–12.

5 PM – 9 PM·Harvard Museum of Natural History, 26 Oxford St, Cambridge, MA

Halloween adventure at Harvard Museum of Natural History includes trick-or-treating galleries, photo booth, costume-inspired nature displays, rare specimen encounters, and a free raffle.

11 AM – 12 PM·Lower Mills, This event will be held inside the library community room., Dorchester · Boston

Tom Knight’s Halloween puppet show in Lower Mills library community room features Freddy the Troll, hand‑made puppets, musical numbers and audience participation, all ages.

7 PM – 10 PM·Chelsea Square, Chelsea, MA 02150

Outdoor screening of animated classic Coco on Chelsea Recreation & Cultural Affairs' giant 9 × 16′ LED screen at Chelsea Square; bring a blanket or chair.

6 PM – 8 PM·Broad Discovery Center, 415 Main Street, Cambridge

Free after‑hours museum night at Broad Discovery Center features a Bluetooth outbreak simulation, interactive displays, DJ Backspin and Operation Outbreak, recommended for middle school ages and above.

4 PM – 7 PM·Chelsea Square, 179 Winnisimmet Street

Trunk or Treat in Chelsea Square offers trick-or-treating, entertainment, and activities with free candy, open to all ages.

3 PM·Malden

A Trick or Treat Treasure Map is handed out at City Hall Plaza, directing participants to candy spots around the square, for ages 12 and under.

10:30 AM – 12:30 PM·Central Library in Copley Square, McKim Exhibition Hall, Boston

Costume showcase, family music dancing, cozy book nook reading, and autumnal activities in the McKim Exhibition Hall for ages 0-5.

5 PM – 8 PM·Discovery Museum · Acton

Sensory‑Friendly Halloween at Discovery Museum.

9 AM – 4 PM·Museum of Science Boston

Halloween-themed weekend at Museum of Science Boston offers drop‑in activities, design challenges, live presentations, and a member‑only raffle; costumes encouraged.

2 PM – 3:30 PM·Connolly, Jamaica Plain · Boston

Treats, crafts, and costumes at Connolly Branch precede a Centre Street parade ending at Mozart Park with games and additional treats for all ages.

12 PM – 3 PM·Hunnewell Lawn, 125 Arborway, Boston, MA

Sinister plants demonstrate spiky thorns, sticky latex, chemical defenses, explosive seed bursts, and black‑light glow on Hunnewell Lawn, with a storytime at 1 pm, all ages.

11 AM – 2 PM·Powisset Farm, 37 Powisset Street, Dover, MA 02030

Trick-or-treating at Powisset Farm kicks off Halloween, all ages.

12 PM·Malden

Costume contest, arts & crafts, face painting, selfie center, games, raffles, and pizza for purchase fill the Salemwood School Fieldhouse.

Hartwell Tavern · Concord

Jack‑o‑lantern‑lit path, colonial music and dancing, and ranger talks on ghost folklore accompany trick‑or‑treat candy at historic Hartwell Tavern — all ages.

3 PM – 4 PM·Auditorium, Central Library, 79 Highland Ave, Somerville, MA, 02143

Costume parade through Central Library auditorium and stacks, followed by a Halloween dance party with desk trick‑or‑treat stations, for ages 3–12.

12 PM·Lincoln

Hayride, carnival games, Trunk or Treat, live music, food, beer, and pony rides fill Pierce Park’s Fall Fest; tickets $16, all ages.

10 AM – 3 PM·Institute of Contemporary Art Boston

Play Date: Free Family Art Day at the Institute of Contemporary Art Boston — free, all ages.

10:30 AM – 12 PM·Boston Nature Center and Wildlife Sanctuary , Mattapan

Nature journaling in the Wild (Boston Nature Center and Wildlife Sanctuary, Mattapan) — all ages.

10:30 AM · 1 PM·Puppet Showplace Theater · Brookline

Lisa the Wise: a puppet tale of a brave girl confronting Baba Yaga in a wits battle at Puppet Showplace Theater, for ages 4–10.

2 PM – 3:30 PM·Drumlin Farm Wildlife Sanctuary , Lincoln

Milk & Cookies at Drumlin Farm Wildlife Sanctuary, Lincoln — ages 2–10.

10 AM – 5 PM·Institute of Contemporary Art Boston

Watershed Community Event: Veronica Robles Cultural Center Day of the Dead at the Institute of Contemporary Art Boston.

10:30 AM – 11:15 AM·Faneuil, Brighton · Boston

Interactive performance by award‑winning Ms. Angel Mone’t at Faneuil, Brighton, featuring music, singing, dancing, storytelling and puppetry for ages 3–5.

11:30 AM – 12 PM·Newton Free Library, Children's Program Room

Music, movement, and literature combine in a story‑inspired dance session at Newton Free Library’s Children’s Program Room, drop‑ins welcome for ages 0–5.