Grand Central Terminal is the heart and soul of New York City. This icon is an architectural and technological marvel that's endured since 1913. It has faced tremendous challenges through the decades: the car and jet age, corporate greed, the wrecking, and a city's indifference. Today, facing challenges very different from years past, such as threats of terrorism. Inside Grand Central takes you inside one of our country's most impressive superstructures and reveals its magnificent secrets.