Grand Central Terminal's southern facade was modeled on a Roman triumphal arch, symbolizing the triumph of the railroad. It was also envisioned as a gateway to the city, then located primarily to the station's south. Jules Coutan's central sculptural group depicts Mercury (the god of commerce) supported by Minerva and Hercules (representing mental and moral strength). After the original Pennsylvania Station was demolished in 1963, Grand Central Terminal was landmarked. This innovative complex integrates the train system with an intricate web of urban conditions.