The lead story in a special "giving guide" showcases the Golden Gate National Parks Conservancy and the Evelyn and Walter Haas, Jr. Fund. Their 21-year partnership is a model of public-private collaboration, built on a shared vision that has "raised the bar of what these National Parks can be."

The Haas, Jr. Fund's donation will go to scenic overlooks, 24 miles of trails and the city's only campground to help turn former Army base into recreation destination

In conjunction with a community celebration of Mori Point on April 26, this article covers the revitalization of this stunning promontory and vital ecosystem. It also describes the efforts of the Parks Conservancy, National Park Service, and volunteers to protect and preserve the unique habitat at Mori Point.

The Parks Conservancy in partnership with the National Park Service engaged 34,484 volunteers who put in 513,884 hours in 2011 alone. That kind of work would cost $10.9 million on the open market.

The Chronicle previews a visit by filmmaker Ken Burns and co-producer Dayton Duncan for "Parks for All," a conference on engaging all communities in national parks. Hosted by the Parks Conservancy and KQED, the event launches "Untold Stories," an outreach initiative to support Burns's forthcoming documentary "The National Parks: America's Best Idea."

The Chronicle profiles the Crissy Field Center's 2008 Community Heroes Award recipients, four inspiring Bay Area individuals and organizations working to improve their environments.

May 2011 marks the 10th anniversary of the $34 million restoration of Crissy Field, a 1.3-mile stretch of shoreline between the new Crissy Field Center on the east and the Warming Hut on the west - one of the great vistas anywhere.

Three proposals for cultural institutions are competing to be chosen as worthy of the spectacular, but currently underutilized, site, which is now home to a sporting goods store.

Three very different proposals were presented Monday for one of the most potentially memorable sites in San Francisco - 8 acres facing the marsh at Crissy Field, downhill from the Presidio's Main Post.

In its coverage of Earth Day-related community events, the Chronicle highlights Crissy Field Center's "Earth Stroll", an opportunity for families to walk Crissy Field, participate in eco-games, learn about the environment, and enjoy a beautiful spring day.