In the middle of the grouping is the 13-foot (4.0 m) clock, the world's largest example of Tiffany glass.
Outside the station, the 13-foot (4.0 m) clock in front of the Grand Central façade facing 42nd Street contains the world's largest example of Tiffany glass.
The exact location of M42 is a closely guarded secret and does not appear on maps, though it has been shown on the History Channel program Cities of the Underworld and a National Geographic special.
Two of the original rotary converters were not removed in the late 20th century when solid-state ones took over their job, and they remain as a historical record.
The lower level has 27 tracks, numbered 100 to 126, east to west; currently, only tracks 102–112, and 114–116 are used for passenger service.
Odd-numbered tracks are usually on the east side (right side facing north) of the platform; even-numbered tracks on the west.
Amtrak briefly returned to the station in Summer 2017 to accommodate track work at Penn Station.
but may also refer to the Grand Central–42nd Street subway station that is located next to the terminal.
The name was also used for the renovated Grand Central Depot, from 1900 until its demolition in 1903.
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. The terminal is one of the world's most visited tourist attractions, with 21.9 million visitors in 2013.