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Free kid-friendly events this week in Brooklyn (9/21-9/27)

Free kid-friendly events this week in Brooklyn (9/21-9/27)

Families can catch Brooklyn Book Festival Children’s Day at Brooklyn Borough Hall, the switch-on of the new lights at the McCarren Park tennis courts in Williamsburg, a free tech and textiles drop-off in Dumbo, a harbor science festival and free kayaking at Brooklyn Bridge Park, the Friends of Greenpoint Library book sale in Greenpoint, the Upcycle tag sale on car-free Montague Street in Brooklyn Heights, Pop-Up Audubon and the last Molière performances in Prospect Park and more! Public schools are closed Monday, September 21 for Yom Kippur, and the Prospect Park Audubon Center is running free programming all day. Be sure not to miss the Atlantic Antic on Sunday — Brooklyn Bridge Parents’ guide to the street fair with kids has the details.

ALL WEEK

Free stroller walks | All week, borough-wide

Every week | Mornings, days vary | Prospect Park, Cobble Hill, Brooklyn Heights, Brooklyn Bridge Park and more | Free | Babies and toddlers in strollers
Brooklyn’s free stroller groups walk every week of the year: Mommy & Me walks Sundays at 10am in Prospect Park, Stroller Mami Walk Mondays at 10am in a rotating neighborhood, the Cobble Hill Walking Club on weekday mornings at Cobble Hill Park, Prospect Park Stroller Walks Thursdays at 10am from the Audubon Center and parkrun Saturdays at 8am in Brooklyn Bridge Park. There are dads’ stroll and run clubs too — the full roundup is in our guide.

Brooklyn Stroll Club

Brooklyn Book Festival Bookend events | Borough-wide

Sunday through Monday, September 20–28 | Times vary | Venues across all five boroughs and online | Almost all free | All ages, event by event
The week of readings, workshops and panels that runs either side of the festival weekend. Check each listing — the organizers say Bookends are overwhelmingly free, but a handful are ticketed.

Fall Plant Giveaway at the Native Nursery | Greenpoint

Through October 30 | 10am–2pm daily, until 5pm on Fridays | Native Nursery at Under the K Bridge Park, 465 Scott Avenue | Free | All ages
Take home free native plants for the stoop, the yard or the windowsill from the North Brooklyn Parks Alliance nursery.

The Shirley Chisholm Way exhibit at Lefferts Historic House | Prospect Park

Wednesday through Sunday | 12–5pm | Lefferts Historic House, 452 Flatbush Avenue | Free | School-age kids
An indoor history exhibit on the Brooklyn congresswoman, good for a rainy afternoon.

Molière in the Park: Don Juan | Prospect Park

Final performances Tuesday, Wednesday and Friday, September 22, 23 and 25 at 7pm, and Sunday, September 27 at 2pm and 3pm | LeFrak Center at Lakeside | Free, RSVP required | Teens and up — mature themes
The closing week of free outdoor Molière at Lakeside.

MONDAY — NO SCHOOL FOR YOM KIPPUR

Yom Kippur school holiday programming at the Prospect Park Audubon Center | Prospect Park

Monday, September 21 | Nature Around Us 10am–3pm; Fall Leaf Discovery 2–3pm | Prospect Park Audubon Center, 101 East Drive | Free | All ages
Seasonal discovery stations, pond samples and water-quality testing all day, then a citizen-science walk that leaves the Audubon Center promptly at 2pm. Lefferts Historic House keeps its ReImagine Lefferts open hours the same day, 12–5pm, also free. The Carousel runs 12–5pm but is $3 a ride. Looking for somewhere to park the day? Our day camps for when public schools are closed guide lists the options.

Babies and Books and Toddler Time at Adams Street Library | Dumbo

Monday, September 21 | 10:30am lapsit for babies who are not yet crawling; 11:15am Toddler Time for crawling and walking toddlers | Adams Street Library, 9 Adams Street | Free, registration required | Babies and toddlers
Two back-to-back sessions for the littlest readers at the Dumbo branch. The two groups are kept separate — register for the right one.

It’s My Park Day | Prospect Park

Monday, September 21 | 10am–12pm | Prospect Park | Free, registration required | Big kids, teens and grown-ups
A morning clean-up with Prospect Park Alliance, and an easy way to fill a school holiday.

Dungeons & Dragons for teens at Greenpoint Library | Greenpoint

Monday, September 21 | 4–5:30pm | Greenpoint Library, 107 Norman Avenue, Eco Lab | Free | Teens 13 and up
A weekly table run by a teen volunteer.

TUESDAY

Game On! at Park Slope Library | Park Slope

Tuesday, September 22 | 3–3:45pm | Park Slope Library, 431 6th Avenue | Free | School-age kids
Drop-in board, card and tabletop games after school.

LEGO Robotics at Park Slope Library | Park Slope

Tuesday, September 22 | 4–5pm | Park Slope Library, 431 6th Avenue, Auditorium | Free | School-age kids
Building and robotics, this season on an animal theme.

WEDNESDAY

Light Up McCarren switch-on celebration | Williamsburg and Greenpoint

Wednesday, September 23 | 6–9:30pm, opening ceremony 6–7pm | McCarren Park tennis courts | Free, RSVP requested | All ages early on
Two years of fundraising by local players and neighbors put lights on seven McCarren courts, and this is the night they go on. An open-play session follows at 7pm on a separate RSVP, and that part is for people who already play.

Light Up McCarren, September 23 2026

Dumbo Tech + Textiles Cleanse | Dumbo

Wednesday, September 23 | 10am–2pm | Dumbo Archway Plaza | Free | An errand with kids rather than an activity
The Dumbo BID and the Lower East Side Ecology Center take working and broken electronics — computers, monitors, phones, printers, TVs, consoles, cables, lead-acid batteries — plus clean, dry clothing, shoes, bags, towels, curtains and bedding. No VHS, CDs or DVDs, no ordinary batteries, no household appliances. Data security is guaranteed and tax-deduction forms are on site. Bringing seven or more full-size items? Come in the first three hours.

Dumbo Tech + Textiles Cleanse, September 23 2026

Stargazing at Brooklyn Bridge Park | Brooklyn Heights

Wednesday, September 23 | 8–10pm | Pier 1, northern promenade corner along the water | Free | Big kids and up, weather permitting
The last session of the season with the Amateur Astronomers Association and their telescopes. It was pushed from September 16 by cloud, so it may move again.

Babies & Books and Toddler Storytime at Park Slope Library | Park Slope

Wednesday, September 23 | 10:30am for birth to 18 months; 11:15am for 18 months to 3 years | Park Slope Library, 431 6th Avenue | Free, registration required | Babies and toddlers
Stories, songs and rhymes, split by age.

Carroll Gardens Library storytimes at St. Paul’s Episcopal Church | Carroll Gardens

Wednesday, September 23 | 10:30am Toddler Time; 11:15am Babies & Books | St. Paul’s Episcopal Church, enter through the gate on Carroll Street | Free | Babies and toddlers
The branch is closed for renovation, so storytime has moved up the block. There is a stroller valet at the gate.

THURSDAY

Prospect Park Stroller Walk | Prospect Park

Thursday, September 24 | 10–11am | Meets at the Audubon Center, 101 East Drive | Free, RSVP | Babies and toddlers in strollers
An hour of walking and company for parents and caregivers, running through October.

Babies & Books at Brooklyn Heights Library | Brooklyn Heights

Thursday, September 24 | 10:30am and 11:15am sessions | Brooklyn Heights Library, 286 Cadman Plaza West, Craft Room | Free, registration required | Ages 0–18 months
Stories and songs in the Craft Room, two sittings.

Prospect Park Fall Migration Walks | Prospect Park

Thursday, September 24 | 7:30am–12pm | Prospect Park | Free | Patient big kids and teens
The Brooklyn Bird Club leads the walk through the autumn migration season. Bring binoculars if you have them.

FRIDAY

Aqua Cosmos: The Hudson Canyon projected on the Brooklyn Bridge | Dumbo

Friday and Saturday, September 25 and 26 | 7–10pm | Best viewed from Emily Warren Roebling Plaza, Brooklyn Bridge Park | Free | All ages
Anita Glesta’s immersive artwork about the undersea canyon off New York Harbor, projected onto the bridge for two nights only.

Nature Exploration: Tree Appreciation Month | Prospect Park

Friday, September 25, 10am–3pm; Saturday and Sunday, September 26 and 27, 10am–1pm | Prospect Park Audubon Center, 101 East Drive | Free | Best for ages 4 to 10
Drop-in leaf crafts and nature-detective sketchbooks at the Audubon Center.

SATURDAY

Brooklyn Book Festival Children’s Day | Downtown Brooklyn

Saturday, September 26 | 10am–4pm | Brooklyn Borough Hall and Plaza, 209 Joralemon Street | Free | Toddlers through tweens
A full day of readings, workshops, performances, book signings and art projects. This year’s line-up includes R.J. Palacio of Wonder, Bess Kalb of the Buffalo Fluffalo books, poet Mahogany L. Browne, Jorge Aguirre and Adam Gidwitz, plus dozens more.

Hudson Canyon to NY Harbor Festival | Dumbo

Saturday, September 26 | 11am–3pm | Emily Warren Roebling Plaza, Brooklyn Bridge Park | Free | All ages
A science festival from the Wildlife Conservation Society’s New York Aquarium about the undersea canyon off the harbor — and the daytime half of that evening’s projection on the bridge.

Free public kayaking at Brooklyn Bridge Park | Brooklyn Heights

Saturday, September 26 | 10am–3pm, 20-minute slots | Pier 2, meet at the north entrance by the floating dock | Free, advance registration strongly recommended | Under 18s must have an adult with them
Life vests, equipment and instruction are all provided, and first-time paddlers are welcome. Book through the Brooklyn Bridge Park Boathouse; walk-up spots are occasional and not guaranteed.

Storytime with Jillian Tamaki at Books Are Magic | Brooklyn Heights

Saturday, September 26 | 11am–12pm | Books Are Magic, 122 Montague Street | Free, no ticket listed | Picture-book age
The Caldecott Honor illustrator reads Young Cat, Old Cat, her embroidered and appliquéd book about a girl and her cat growing up together.

Storytime with Ruth Behar and Gabriel Frye-Behar at Books Are Magic | Brooklyn Heights

Saturday, September 26 | 12–1pm | Books Are Magic, 122 Montague Street | Free, no ticket listed | Picture-book age
Picadillo for Paulina, about a girl keeping a promise to go vegetarian without giving up her family’s Cuban cooking.

Friends of Greenpoint Library Fall Book Sale | Greenpoint

Saturday, September 26, 12–4pm and Sunday, September 27, 1:30–4pm | Greenpoint Library, 107 Norman Avenue | Free to browse | All ages
The branch’s annual fall sale. Note that Greenpoint’s Wednesday toddler storytimes and Saturday Family StoryTime are cancelled this week while staff set up for it.

University Open Air | Prospect Park

Saturday and Sunday, September 26 and 27 | 10am–2pm | Prospect Park Audubon Center | Free, RSVP | All ages
Open-air classes from Brooklyn Public Library and Prospect Park Alliance.

Pop-Up Audubon | Prospect Park

Saturday and Sunday, September 26 and 27 | 12–4pm | Concert Grove Pavilion and Nethermead Arches | Free | All ages
Two stations: one on supporting migratory birds in autumn at the Concert Grove Pavilion, one on what lives underfoot at the Nethermead Arches.

Jazz in the Garden at the Amazing Garden | Carroll Gardens

Saturday, September 26 | 5–6pm | Amazing Garden, Carroll Gardens | Free | All ages
The Willie Martinez Trio play a community-garden set, courtesy of Carroll Gardens Library. Bring a picnic blanket.
SUNDAY

Atlantic Antic street fair | Boerum Hill, Cobble Hill and Brooklyn Heights

Sunday, September 27 | Daytime, along Atlantic Avenue | Free | All ages
Brooklyn’s biggest street fair, with a kids’ zone, live music and a mile of food stalls. Our guide has the stroller routes, the bathrooms and where to find the quiet corners

Kids at the Atlantic Antic street fair

Brooklyn Book Festival Day and Literary Marketplace | Downtown Brooklyn

Sunday, September 27 | 10am–6pm | Brooklyn Borough Hall and surrounding venues, including Columbus Park and the Center for Brooklyn History | Free | Teens and grown-ups, with the marketplace fine for everyone
Eight indoor and outdoor stages and a marketplace of publishers and booksellers. Marlon James, Joyce Carol Oates, Colson Whitehead, Tracy K. Smith and Douglas Stuart are among the names announced.

Upcycle: Community Tag Sale at Montague Open Streets | Brooklyn Heights

Sunday, September 27 | Tag sale 12–4pm; street car-free 10am–7pm | Montague Street between Clinton and Hicks | Free | All ages
Forty Brooklyn Heights households clearing out secondhand kids’ clothes, books, toys, housewares and décor. No early shoppers, and seller spots are full — waitlist only, no walk-ups. Free the same afternoon on the same two blocks: walking tours of Brooklyn Heights with McNeil Tours at 1pm and 3pm, meeting outside Khaosan Thai at 128 Montague Street and bookable in advance; Art for Kids with Miss Piera outside Le Meraviglie at 108 Montague, 12–5pm, with an adult staying alongside; and giant street chess, oversized lawn games and sidewalk chalk. It clashes with the Atlantic Antic, so pick one or do both slowly.

Greenmarket and Intro to Capoeira at Domino Park | Williamsburg

Sunday, September 27 | Greenmarket through November 22; capoeira Sundays through October 25 | Domino Park and Domino Square, River Street | Free | Beginners and families
GrowNYC’s Sunday market for produce, flowers and plants, and a beginner-friendly Afro-Brazilian martial arts class on the same afternoon.

Garden Club at McGolrick Park | Greenpoint

Sunday, September 27 | 10am–12pm | Meet at the pavilion in the center of McGolrick Park | Free, sign up | Big kids and grown-ups
Two hours of volunteering in North Brooklyn’s oldest park.

Free kid-friendly events this week in Brooklyn (9/21-9/27)
Free kid-friendly events this week in Brooklyn (9/21-9/27)
Free kid-friendly events this week in Brooklyn (9/21-9/27)
Free kid-friendly events this week in Brooklyn (9/21-9/27)
Best drop-in indoor activities for kids & teens in Brooklyn
Best drop-in indoor activities for kids & teens in Brooklyn

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