Grand Central Terminal Station 100th Anniversary, New York City, United States

- Terminal City
The construction of Grand Central created a mini-city within New York, including the Commodore Hotel and various office buildings. It spurred construction throughout the neighborhood in the 1920s including the Chrysler Building.
In 1928, the New York Central built its headquarters in a 34-story building (now called the Helmsley Building) straddling Park Avenue on the north side of the Terminal.
There is a "secret" platform, number 61, under the station. This was used only once to convey President Franklin D. Roosevelt directly into the Waldorf-Astoria Hotel. This platform was part of the original design of the Waldorf Astoria. It was mentioned in The New York Times in 1929 but was first used by General Pershing in 1938.