Help enhance the Presidio’s historic gardens and grounds, as well as support the park efforts to become a model of environmental sustainability.

Help enhance the Presidio’s historic gardens and grounds, as well as support the park efforts to become a model of environmental sustainability.

Get outside on National Public Lands Day by either volunteering or exploring your national park!

Join the Redwood Empire Mountain Bike Alliance and the California Native Plant Societyffor a mountain bike-powered Rare Plant Treasure Hunt at Trione-Annadel State Park as part of the City Nature Challenge.

Join us in Lagunitas Creek to enhance salmon habitat by planting native trees!

Join us as we perform maintenance on this lovely trail and do much needed storm repair and drainage improvements.

Battery Townsley, at Fort Cronkhite, was San Francisco's most extensive--and most secret--World War II military fortification. Come visit and explore this labyrinthine battery.

Park Ranger Greg Reza will lead participants through an interactive reading of A Stone Sat Still, a new book by Caldecott Honor recipient Brendan Wenzel being featured at Bothin Marsh.

Women and Incarceration Day is a new program on Alcatraz Island that lifts up and highlights the unique experiences women face while spending time inside of jails and prisons.

Join historian John Martini on a two-hour walk and learn the history of San Francisco’s famous Cliff House and the ruins of Sutro Baths.