Great Smoky Mountains National Park 2026 Calendar. Experience the breathtaking beauty of the Great Smoky Mountains National Park throughout the year with this stunning 2026 calendar. Each month showcases a captivating photograph that captures the park's diverse landscapes, from rolling mist-covered peaks to vibrant wildflower meadows and serene forest paths capturing seasonal changes each location is known for. This 12x18" 12 month calendar is printed on heavy card stock with a high gloss protective finish. This is a great gift idea for those who love the Smokies.