location This section of the complex was frequently used for movie shooting when it is closed. Notable scenes include a famous scene in the 1971 film The French Connection, an episode of Fringe, an episode of Person of Interest, and an episode of 30 Rock (filling in for 47th–50th Streets–Rockefeller Center station). Image gallery IRT Lexington Avenue Line platforms The Grand Central–42nd Street station is an express station on the IRT Lexington Avenue Line. It was also known as the Diagonal Station at time of construction, being oriented 45° from the street grid. It has two island platforms, four tracks, and includes a crossover and a crossunder. The columns and beams here are massive, in order to support part of Grand Central Terminal and the office towers next to it. On one wall, there is a stylized steam locomotive mosaic. The northbound platform's side wall includes tile depicting a big passageway; the first room, as seen from the platform, has doors to a second room which appears to be a mechanical room. There is a correctly oriented compass rose inlaid on the floor of the mezzanine. The Grand Central complex is home to the master tower which controls the entire Lexington Avenue Line, located south of the Lexington Avenue Line platforms. Just south of the station, the southbound local track merges into the original downtown local track from the 42nd Street Shuttle, the only one remaining from the original four-track IRT subway (see ). The uptown tracks are about below the original grade at the point where they turn off. The old uptown express and local trackways that used to lead to the 42nd Street Shuttle are visible from the uptown local track. The unused ramps leading from the 42nd Street Shuttle are still in place. After the merge, the pairs of tracks in each direction diverge, with two on each side of the 1870 New York and Harlem Railroad Murray Hill Tunnel, which is now used for automobile traffic on Park Avenue. Image gallery IRT Flushing Line platform The Grand Central–42nd Street station (signed as 42nd Street–Grand Central) on the Flushing Line has a single island platform and two tracks. There is a large arched ceiling, similar to other deep-level stations in the system and in other parts of the world. Along the platform are stairs and escalators to other lines and to a mezzanine and passageways under the