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John Muir Birthday Earth Day Celebration

A sign for the John Muir National Historic Site, indicating it's managed by the National Park Service.

Join MVSD and Mt. Diablo Wetlands Fund to celebrate John Muir’s legacy of conservation and his love of nature at the John Muir Birthday/Earth Day Celebration on Saturday, April 18, 2026. Enjoy a day filled with music, food, and fun activities for the whole family. Stop by our booth to learn ways that you can help protect the environment and what we do to keep our community safe.   You don’t want to miss this free celebration from 10 am-4 pm at the John Muir National Historical Site at 4202 Alhambra Avenue on Highway 4 in Martinez. We’ll see you there!

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