We may have entered fall this week but the summertime vibes are still in full effect. On tap: a birthday celebration for a super-rad Oakland museum, a salsa festival and a mountain music party in the Redwoods. It’s also a great weekend to get out there and help your neighbors clean up our California coast. Gear up, you’re in for a wild ride!

photo: iStock

San Francisco

Transportation/Transformations Community Day
You’re invited to walk, bike, or take public transit to The Exploratorium for this pay-what-you-wish day! This festive Community Day wraps up Transportation/Transformations, a week exploring the future of sustainable transportation. Get a peek at new transportation technology, experience more than 650 hands-on exhibits, enjoy the café and restaurant and more at this beautiful San Francisco bayside location. Sat. Event details

Presidio Theatre Open House
For the first time in 24 years, the newly-transformed Presidio Theatre will open its doors to the public! Come explore the beautifully renovated theatre—a home for dance, theatre, music, film and performing arts of all kinds. Open House features free behind-the-scenes experiences, docent tours and a live performance by the Presidio Theatre Pop-Up Orchestra playing music of the 1930’s, the original era of the Theatre. Sun. Event details

East Bay

OMCA’s 50th Anniversary Birthday Weekend
Celebrate OMCA’s 50th birthday all weekend long with $5 admission to OMCA’s galleries of California Art, History and Natural Sciences. Sat.-Sun. Event details

Eat Real Festival
Eat Real Festival, now in its 11th year, combines a state fair, a street-food festival and a block party to create a celebration of good food. Eat Real’s mission is to help revitalize regional food systems, build public awareness and respect for the craft of making good food and encourage the growth of American food entrepreneurs. The free festival features sustainably-sourced menus from over fifty food vendors, craft beers, wines and cocktails in addition to ticketed food experiences. Sat.-Sun. Event details.

Peninsula

Rancho Day Fiesta
Take a trip back to the 1840’s when Don Francisco Sanchez raised cattle for the hide-and-tallow trade at his Rancho San Pedro. A living history event, visitors will be invited to make adobe bricks, stamp leather, dip candles, make corn husk dolls, churn butter and participate in other rancho-era activities, including learning how to dance as the early Californios did. Sat. Event details

Redwood City Salsa Festival
Redwood City is fired up for its 12th annual Salsa Festival where you’ll find salsa music, salsa dancing and salsa tasting. Sat. Event details

South Bay

Santa Cruz Mountain Sol Festival
Head to the Redwoods for this three-day mountain music festival that is fun for all ages. Fri. Event details

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Bats – Superheroes of the Night
Join a park interpreter for this family-friendly program that investigates the mysteries and myths of bats. Activities will include a short walk in search of these magnificent creatures in their natural habitat. Sun. Event details

North Bay

Ocean Appreciation & Coastal Cleanup
Honor the waterways and ocean by taking part in the 35th annual California Coastal Cleanup Day. Slide Ranch is one of over a thousand sites, both inland and coastal, that are hosting an organized cleanup to steward our environment and resist the scourge of marine pollution. Team up to clean up the coast at Slide Ranch and protect the ocean. The day will also include ocean-inspired art projects, goat milking, visiting the chickens, ducks and turkeys and an ocean-garden cooking project. Sat. Event details

Marine Science Sunday
Head to the Marine Mammal Center for this engaging ocean-inspired classroom series from education experts. These interactive classroom programs are great for all ages! Presentations at noon and 2 p.m. Guided tours at 11 a.m., 1 and 3 p.m. Sun. Event details

—Kate Loweth