The National Parks System in the United States is a network of protected areas established to preserve the natural beauty, wildlife, and cultural heritage of the country. It includes over 400 sites, such as national parks, monuments, and historic sites, managed by the National Park Service (NPS). These areas provide opportunities for outdoor recreation, education, and conservation. The first national park, Yellowstone, was created in 1872, setting a precedent for the preservation of natural landscapes. Today, the National Parks System aims to protect diverse ecosystems and promote public enjoyment while ensuring that future generations can experience these unique environments.