Grand Central Terminal (GCT; also referred to as Grand Central Station or simply as Grand Central) is a commuter and intercity railroad terminal at 42nd Street and Park Avenue in Midtown Manhattan in New York City, United States. The terminal serves commuters traveling on the Metro-North Railroad to Westchester, Putnam, and Dutchess counties in New York, as well as to Fairfield and New Haven counties in Connecticut. The terminal also contains a connection to the New York City Subway at Grand Central–42nd Street. Grand Central Terminal has intricate designs both on its inside and outside, lending to its landmark designations, including as a U.S. National Historic Landmark. The terminal is one of the world's most visited tourist attractions, with 21.9 million visitors in 2013.