Since 1919, we have been the leading voice of America's national parks. Our mission is to protect and enhance America's National Park System for present and future generations. We believe that America's national parks and historic sites embody the American spirit. They are windows to our past, homes to some of our rarest plants and animal species, and places where every American can go to find inspiration, peace, and open space. NPCA plays a crucial role in ensuring that these special places are protected in perpetuity. And we couldn't do it without you. NPCA represents more than 500,000 members and supporters throughout the country, whose help is critical in protecting our national parks.