The hidden station

A view of the hidden train station, as seen on July 9, 2010. Even though it has long since stopped servicing FDR and his special train car, it still has a solemn presidential duty.

Whenever the current U.S. president is in New York City, this station--and a special platform--is ready for any emergency that might cause the president to need to be evacuated by rail.

When the president is in town, a special rail car is held at the platform and is tightly guarded by federal and local authorities, including the Secret Service and the FBI. If anyone was to attempt to go near the special platform, or even to try to go through any of the entrances that get there, they would likely be held by the Secret Service until the president leaves New York.

Click here to read the related behind-the-scenes story on the secrets of Grand Central Terminal. And click here to check out the entire Road Trip 2010 package.