The National Park Service (NPS) is a U.S. government agency responsible for managing and preserving national parks, monuments, and other protected areas. Established in 1916, its mission is to conserve the natural and cultural resources of these sites for future generations while providing opportunities for public enjoyment and education. The NPS oversees over 400 sites across the United States, including famous locations like Yellowstone National Park and Yosemite National Park. The agency works to protect wildlife, maintain park facilities, and promote outdoor activities, ensuring that visitors can experience the beauty and history of America's natural landscapes.