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| | Metro-North: Grand Central Terminal and Park Avenue Viaduct |
 | | Grand Central Terminal is a vast complex, including office buildings, several subway lines (4,5,6,7,S) as well as two levels of railroad tracks. |
 | | Grand Central's upper level features 29 tracks surrounding island platforms, as follows (from west to east): 41/42, 39, 40, 38, 37/36, 35/34, 33/32, 30/29, 28/27, 26/25, 24/23, 21/20, 19/18, 17/16, 15/14 and 13/11. |
 | | Departing by train from Grand Central, the tracks combine to a four-track trunk line through a tunnel under Park Avenue. |
| www.nycsubway.org /nyc/metronorth/gct.html (371 words) |
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