The national park that features Mount Rainier is Mount Rainier National Park.

Mount Rainier National Park, established in 1899, is located in Washington State and is home to the majestic Mount Rainier, a towering stratovolcano that reaches an elevation of 14,411 feet. The park is celebrated for its stunning natural beauty, which includes lush old-growth forests, vibrant wildflower meadows, and glacial lakes. It offers a variety of recreational activities, such as hiking, climbing, and wildlife viewing, attracting outdoor enthusiasts year-round. The park's diverse ecosystems support a rich array of plant and animal life, and its iconic landscapes make it a popular destination for photographers and nature lovers. As a designated UNESCO World Heritage Site, Mount Rainier National Park showcases the geological and ecological significance of this remarkable region, offering visitors unforgettable experiences amid breathtaking scenery.