Indian Railways has declared the 130-year-old Mailani–Nanpara rail line in Dudhwa a National Heritage Route, honoring its engineering legacy while advancing sustainable tourism. Stretching through Dudhwa National Park, the route will preserve vintage equipment and promote eco-tourism, linking history with nature. This initiative celebrates India’s rail heritage, supports rural development, and connects travelers to one of Uttar Pradesh’s most scenic and culturally rich regions.