Grand Central Terminal in Manhattan celebrates its 100th anniversary Feb. 1. Here are some iconic images of the world's biggest train terminal. (Jan. 31, 2013)
With security officers preached in the main window
With security officers preached in the main window walkway above and center, the West Point Brass and Percussion Band and West Point Color Guard start the Grand Central 100 Years celebration ceremony at the terminal in Manhatan. (Feb. 1, 2013) (Credit: Craig Ruttle)
At the ceremony marking Grand Central 100 Years,
At the ceremony marking Grand Central 100 Years, Mayor Michael Bloomberg speaks about the 100th Anniversary of Grand Central Terminal, much of his remarks intertwined with praise for Mayor Ed Koch who passed away early this morning. (Feb. 1, 2013) (Credit: Craig Ruttle)
Seen from one of the glass walkways above
Seen from one of the glass walkways above the main floor of Grand Central Terminal the Grand Central 100 Years celebration goes on inside the main hall of the terminal in Manhattan. (Feb. 1, 2013) (Credit: Craig Ruttle)

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Security officers watch from one of the main
Security officers watch from one of the main window walkway and inside the "0" of the number "100" above the main floor of Grand Central Terminal for th Grand Central 100 Years celebration ceremony in Manhatan. (Feb. 1, 2013) (Credit: Craig Ruttle)
Actress Cynthia Nixon speaks at the Grand Central
Actress Cynthia Nixon speaks at the Grand Central 100 Years celebration in the main hall of the terminal in Manhattan. (Feb. 1, 2013) (Credit: Craig Ruttle)
With a police officer silhouetted in the foreground,
With a police officer silhouetted in the foreground, Caroline Kennedy, Honorary Chair of the Grand Central Centennial (Credit: Craig Ruttle)
Seen from one of the glass walkways above
Seen from one of the glass walkways above the main floor of Grand Central Terminal, speaker and actress Cynthia Nixon, center left, and Caroline Kennedy, Honorary Chair of the Grand Central Centennial Committee whose mother Jacqueline Kennedy Onassis is widely credited with saving the Terminal from destruction in the 1970s, listen to speakers at the Grand Central 100 Years celebration in the main hall of the terminal. (Feb. 1, 2013) (Credit: Craig Ruttle)
Commuters pass through Grand Central Terminal before the
Commuters pass through Grand Central Terminal before the official kick off of the Grand Central 100 Years celebration. (Feb. 1, 2013) (Credit: Craig Ruttle)

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A Lego model of Grand Central Terminal is
A Lego model of Grand Central Terminal is popular with commuters as they pass by before the kick off of the Grand Central 100 Years celebration. (Feb. 1, 2013) (Credit: Craig Ruttle)
The clock above the Grand Central Terminal information
The clock above the Grand Central Terminal information booth, with faces made of opal, ticks on the day before the famed Manhattan transit hub turns 100 years old. (Jan. 31, 2013) (Credit: Getty Images)
People walk through Grand Central Terminal on the
People walk through Grand Central Terminal on the day before the famed Manhattan transit hub turns 100 years old. The terminal opened in 1913 and is the world's largest terminal, covering 49 acres and 33 miles of track. (Jan. 31, 2013) (Credit: Getty Images)
A person walks across a glass catwalk at
A person walks across a glass catwalk at Grand Central Terminal on the day before the famed Manhattan transit hub turns 100 years old. (Jan. 31, 2013) (Credit: Getty Images)
The antique Tiffany clock still ticks at Grand
The antique Tiffany clock still ticks at Grand Central Terminal on the day before the famed Manhattan transit hub turns 100 years old. (Jan. 31, 2013) (Credit: Getty Images)

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The antique Tiffany clock at top sits above
The antique Tiffany clock at top sits above Park Avenue at Grand Central Terminal on the day before the famed Manhattan transit hub turns 100 years old. (Jan. 31, 2013) (Credit: Getty Images)
An antique generator remains in the Grand Central
An antique generator remains in the Grand Central Terminal subbasement in Manhattan. (Jan. 31, 2013) (Credit: Getty Images)
Antique equipment remains in the Grand Central Terminal
Antique equipment remains in the Grand Central Terminal subbasement on the day before the famed Manhattan transit hub turns 100 years old. (Jan. 31, 2013) (Credit: Getty Images)
Travelers cross the main concourse of Grand Central
Travelers cross the main concourse of Grand Central Terminal in Manhattan as seen from above via a window near the ceiling. (Jan. 8, 2013) (Credit: AP)
Workers keep an eye on train traffic coming
Workers keep an eye on train traffic coming and going from Grand Central Terminal from a master control room high atop the building in Manhattan. Grand Central Terminal celebrates its 100th anniversary Feb. 1. (Jan. 8, 2013) (Credit: AP)
Artists must submit their work to a jury
Artists must submit their work to a jury panel, which evaluates artistry and expertise, to be accepted into one of 76 slots at the Grand Central Holiday Fair in Vanderbilt Hall at Grand Central Terminal. (Dec. 7, 2012) (Credit: Handout)
A rendition of the new terminal that will
A rendition of the new terminal that will be in service for Long Island Rail Road passengers into Grand Central Terminal. (Credit: Courtesy of Metropolitan Transportation Authority)
A rendition of the new terminal that will
A rendition of the new terminal that will be in service for Long Island Rail Road passengers into Grand Central Terminal. (Credit: Courtesy of Metropolitan Transportation Authority)
A rendition of the new terminal that will
A rendition of the new terminal that will be in service for Long Island Rail Road passengers into Grand Central Terminal. (Credit: Courtesy of Metropolitan Transportation Authority)
Contractors work on the East Side Access Project
Contractors work on the East Side Access Project on Tuesday below midtown Manhattan. The project will enable Long Island Rail Road customers to arrive directly at Grand Central Station. (Jan. 29, 2013) (Credit: Charles Eckert)
Contractors work on the East Side Access Project
Contractors work on the East Side Access Project on Tuesday below midtown Manhattan. The project eventually will enable Long Island Rail Road customers to arrive directly at Grand Central Station. (Jan. 29, 2013) (Credit: Charles Eckert)
Contractors work on the East Side Access Project
Contractors work on the East Side Access Project on Tuesday below midtown Manhattan. The project eventually will enable Long Island Rail Road customers to arrive directly at Grand Central Station. (Jan. 29, 2013) (Credit: Charles Eckert)
David Herring, right, assists travelers with their train's
David Herring, right, assists travelers with their train's track number from his post inside the information booth at the center of the main concourse at Grand Central Terminal in Manhattan. (Jan. 9, 2013) (Credit: AP)
The famous opalescent clock that keeps time at
The famous opalescent clock that keeps time at the center of the main concourse in Grand Central Terminal in Manhattan is shown. (Jan. 9, 2013) (Credit: AP)
Passengers disembarking from a train pass a sign
Passengers disembarking from a train pass a sign advertising the 100th anniversary of Grand Central Terminal in Manhattan. (Jan. 9, 2013) (Credit: AP)
Built by the Vanderbilts, railroad barons and industrialists
Built by the Vanderbilts, railroad barons and industrialists who were among America's richest and most powerful families, Grand Central Terminal in Manhattan features track entrances with acorns and oak leaf clusters, the Vanderbilt family's symbols. (Jan. 8, 2013) (Credit: AP)
Dust and feathers fly as one of the
Dust and feathers fly as one of the famous chandeliers of Grand Central Terminal is cleaned and maintained after being lowered in a passageway. (Jan. 17, 2013) (Credit: Craig Ruttle)
It's a well-kept secret that the departure times
It's a well-kept secret that the departure times on the board in Grand Central Terminal's main concourse are posted one minute earlier than the trains actually leave to make sure passengers are board in time for the train's departure in Manhattan. (Jan. 8, 2013) (Credit: AP)
A server works beneath the tiled and vaulted
A server works beneath the tiled and vaulted ceilings at The Oyster Bar at Grand Central Terminal in Manhattan. When the restaurant opened its doors in 1913, Woodrow Wilson was president, the nation was on the verge of World War I and Prohibition was six years away. (Jan. 9, 2013) (Credit: AP)
The Campbell Apartment bar in Grand Central Terminal
The Campbell Apartment bar in Grand Central Terminal in Manhattan was once the private office and parlor of American financier John Campbell. (March 23, 2009) (Credit: Bloomberg News)
People exit a Metro-North train arriving in Grand
People exit a Metro-North train arriving in Grand Central Terminal during the morning rush hour in Manhattan. (Nov. 1, 2012) (Credit: Getty Images)
People walk through the Apple retail store in
People walk through the Apple retail store in Grand Central Terminal. (Dec. 10, 2012) (Credit: Getty Images)
Passengers disembark from a Metro-North Railroad car after
Passengers disembark from a Metro-North Railroad car after it pulled into Grand Central Terminal in Manhattan. (Jan. 9, 2013) (Credit: AP)
The mythological figures Hercules, Mercury and Minerva adorn
The mythological figures Hercules, Mercury and Minerva adorn the main facade of Grand Central Terminal, part of a sculptural group created by Jules Alexis, atop the terminal in Manhattan. (Jan. 8, 2013) (Credit: AP)