The U.S. state with the most national parks is California. Home to nine national parks, including renowned locations like Yosemite, Sequoia, and Joshua Tree, California showcases a remarkable variety of natural landscapes, from towering mountains to stunning coastlines. These parks serve as vital conservation areas for diverse ecosystems and wildlife, while also offering numerous recreational opportunities for visitors. California's national parks attract millions of tourists each year, contributing significantly to the state’s economy through tourism and outdoor activities. The dedication to preserving these natural treasures reflects California's commitment to environmental stewardship and public enjoyment.