OverviewHeadquarters: Oakland, CA, United StatesWebsite: sierraclub.orgFounded: 1968Areas of Focus: Environment About UsMission: The purposes of the Sierra Club are to explore, enjoy, and protect the wild places of the earth; to practice and promote the responsible use of the earth's ecosystems and resources; to educate and enlist humanity to protect and restore the quality of the natural and human environment; and to use all lawful means to carry out these objectives. industry: Nonprofit