Introduction to Grand Central Station: Grand Central Terminal (also translated as Grand Plaza Station, Grand Central Terminal, usually referred to as Grand Central Station) is a metropolitan Northern Railway, New York Subway Line 7, An underground railway station where the Lexington Avenue Line (Lines 4, 5, and 6) and the S Line intersect. The station, along with Pennsylvania Station, is an important transportation hub in the greater New York area and one of the busiest and most famous railway stations in the United States.