In this in-depth profile about the sustained and active philanthropy of the Haas family, San Francisco Chronicle Magazine highlights a legacy of giving that includes major contributions to the Parks Conservancy that transformed, and continue to transform, Crissy Field and the Presidio.

Rob Hill Campground--San Francisco's only overnight urban campground.

The Presidio Nursery gets a new seed and plant lab, marking the first step towards a new stewardship and sustainability Center.

The Presidio Trust has a spectacular opportunity to remake two sections of the Presidio with amazing views of San Francisco Bay and the Golden Gate Bridge. The process to select a project will redevelop the former commissary building, which currently houses the Sports Basement sporting goods store.

More than 1,300 community members pitched in across the Golden Gate National Parks, inspired by Dr. King's spirit of service and by President Obama's call to renew America's promise from coast to coast. The Chronicle mentions the Parks Conservancy's role in organizing an overwhelming turnout of Bay Area volunteers.

There's nothing subtle about the work of Ai Weiwei, the internationally known Chinese political dissident and artist who designed the striking exhibition titled "@Large: Ai Weiwei on Alcatraz," opening Saturday and running through April 26. His comment on freedom of expression and human rights -- through images of political prisoners captured here in one of the world's most infamous lockups -- echo loudly, like the clank of cellblock doors.

On September 27th visitors to Alcatraz Island will get an extra element to explore, an art exhibit by Chinese artist Ai Weiwei, @Large: Ai Weiwei on Alcatraz. The exhibit explores human rights and freedom of expression in seven site-specific installations in four locations, some areas not usually open to the public, throughout the island.

Alcatraz Island, which hosted its last inmate 50 years ago today, was also home to prison workers and their families who returned to the island this morning to mark the anniversary and recount their lives there.

Muir Beach will be once again open to the public after undergoing a six-month, $4 million revamp.

A state-of-the-art visitor's center will open this weekend at Lands end in the Golden Gate National Recreation Area.