Friday, August 25

National Park Service Birthday, free admission to all National Parks.

Yerba Buena Festival, 11-11:30am & 12:15–12:45pm, Venezuelan Music Project, San Francisco.

Campfire Program, 7-9pm, Join rangers for an evening of fun with local lore, legends, and campfire tales, McNears Beach Park, San Rafael.

The Rainbow Fish Musical, 12pm, Come with us under the sea for The Rainbow Fish Musical, a world premiere based on the award-winning book by Marcus Pfister about the joy of finding friendship through sharing, Children's Creativity Museum, San Francisco.

Outdoor Movie Night, Inside Out, Pier 39, San Francisco.

Concert Under the Oak, Northgate Mall, San Rafael

Jazz & Blues by the Bay, Sausalito

Picnics on the Plaza, San Anselmo Town Hall Plaza & Lawn

Friday Nights on Main, Tiburon

MVCode Minecraft Community Server Build Night, 7-10pm, MVCode in Greenbrae.

Finding Dory, Howarth Park, Santa Rosa

Inside Out, Pier 39

Saturday, August 26

Bay Area Pignic 2017, 10am-2pm, a fun-filled gathering for guinea pigs and their owners, Marin Humane Society.

Junior Chef Class, 10am, ages 8-13, $30/kid, American Girl Lunch Party benefiting No Kid Hungry!, Williams-Sonoma, The Village at Corte Madera.

The Rainbow Fish Musical, 10:30am & 1:30pm, Come with us under the sea for The Rainbow Fish Musical, a world premiere based on the award-winning book by Marcus Pfister about the joy of finding friendship through sharing, Children's Creativity Museum, San Francisco.

Heritage Day, 11am-4pm, features musical and dance performances, including Lion Dancers and Chinese folk dancers and more, China Camp State Park, San Rafael.

Yerba Buena Festival, 1-2:30pm, Paula West, San Francisco.

Music Fest, Homestead Valley Community Center

The Search for Life Beyond Earth with Carol Stoker, 8:30pm, Planetary Scientist, NASA Ames Research Center, Mill Valley.

Rock Balancing Gathering, 11am-2pm, Crissy Field, San Francisco.

Afternoon Art, 1-4pm, noodle boats, Randall Museum, San Francisco.

Disney's Beauty and the Beast 1991 & 2017, Sonoma State University

La La Land, Washington Square Park, San Francisco

Sunday, August 27

Point Reyes Annual Sand Sculpture Contest, Point Reyes

Streets for People, Fairfax

Giant Race SF, 7am-12pm, Half Marathon segment and to celebrate with all participants in our Presidio booth at the finish line at AT+T Park.

Origami-Palooza & Paper Airplane Contest, San Francisco

Marine Science Sunday, 10am-5pm, Marine Mammal Center, Sausalito.

August Sunday Fundays, 10am-5pm, Ocean Explorations, an opportunity to do and see awe-inspiring science, Lawrence Hall of Science, Berkeley.

Infant and Child CPR (For expectant parents, parents, grandparents, and caregivers of children up to onset of puberty), 10am-12:30pm, Parents Place, San Rafael.

Music with Megan, 10:30am, Book Passage, Corte Madera.

The Rainbow Fish Musical, 10:30am & 1:30pm, Come with us under the sea for The Rainbow Fish Musical, a world premiere based on the award-winning book by Marcus Pfister about the joy of finding friendship through sharing, Children's Creativity Museum, San Francisco.

Presidio Picnic, 11am-4pm, Main Parade Grounds, Presidio, San Francisco.

Concerts on the Plaza, Downtown Mill Valley

Summer Sunday Concerts, Piccolo Pavilion in Old Corte Madera Square

Dawn Scott - Spirit Rock Mindfulness for Children, 2pm, Book Passage.

Summer Music Series, 2-4pm, Town Center, Corte Madera.

Tutu School Back to Ballet Party! 3-4:30pm, Join Tutu School for a day of twirling and ballet bag decorating. RSVP to twirl@tutuschool.com or (415) 419-5610, space is limited!

Free Music in the Park, Creek Park, San Anselmo

MAVIS STAPLES and Kev Choice Ensemble, 2pm, Funk/Hip Hop Dance with Paula Plessas, Stern Grove, San Francisco