The John Muir National Historic Site is located in the San Francisco Bay Area, in Martinez, Contra Costa County, California.

[7] While living here, Muir realized many of his greatest accomplishments, co-founding and serving as the first president of the Sierra Club,[8] in the wake of his battle to prevent Yosemite National Park's Hetch Hetchy Valley from being dammed, playing a prominent role in the creation of several national parks, writing hundreds of newspaper and magazine articles and several books expounding on the virtues of conservation and the natural world, and laying the foundations for the creation of the National Park Service in 1916.

The home contains Muir's "scribble den," as he called his study, and his original desk, where he wrote about many of the ideas that are the bedrock of the modern conservation movement.

In 1988 nearby Mount Wanda Nature Preserve (named for one of John Muir's two daughters) was added to the Historic Site.

[11] The John Muir National Historic Site offers a biographical film, tours of the house and nature walks on Mount Wanda.