The 180th Street–Bronx Park station was the former terminal station for the IRT White Plains Road Line of the New York City Subway. The line was originally supposed to extend farther north during the construction but was changed into a terminal due to protests stating that the trains running over the park would be bad for animals in the Bronx Zoo. The line's extension is the reason for the S-curve north of the West Farms Square–East Tremont Avenue station.