Each season offers unique opportunities in different parks. Spring is ideal for witnessing wildflowers in bloom at places like Great Smoky Mountains National Park. Summer is perfect for exploring higher elevations, such as Glacier National Park, where snow has melted. Fall brings stunning foliage to parks like Acadia and Shenandoah, while winter transforms Yellowstone and Yosemite into serene, snowy wonderlands. Researching the seasonal highlights of your chosen park can help you decide the best time to visit.