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.

Join our winter solstice gathering atop Mt. Tam!

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.

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.