The John Muir National Historic Site is located in the San Francisco Bay Area, in Martinez, Contra Costa County, California. It preserves the 14-room Italianate Victorian mansion where the naturalist and writer John Muir lived, as well as a nearby 325-acre tract of native oak woodlands and grasslands historically owned by the Muir family. Muir was perhaps this country's most famous and influential naturalist. If it weren't for John Muir and his writings, we probably would not have Yosemite National Park as we know it today. He was also involved in the creation of the Grand Canyon, Kings Canyon, Petrified Forest, and Mt. Rainier National Parks. Additionally, his writings about Alaska led to further preservation of the landscape over time. Because of his influential writings and role in the creation of multiple parks, he is often called The Father of Our National Park System.""