Freight trains rarely run now in String City, due to the lack of goods moving to and from the docks. In many railyards, local artists have begun converting the abandoned tracks and rolling stock into works of art.
Big Tusk Railhead is home to some of the biggest art installations, including a particularly dramatic piece entitled Whistlestop. An anonymous artist used copper pipe to connect over two hundred discarded steam locomotives, and left a plaque stating that anyone who opens and closes the valves in the correct sequence will release enough steam to flash-boil the entire city. So far, nobody has succeeded.