Argentina, Tierra del Fuego. During a stay in Ushuaia, a visit to the southernmost national park of Argentina is a must. You can explore the park in many ways. A very special one I would like to introduce to you in my following article: A train ride in the Tierra del Fuego National Park with the historic Tren del Fin del Mundo. Learn more about the southernmost train in the world and which highlights you can experience on the day trip by train and bus in the Tierra del Fuego National Park.