The 站前广场 ("station-front square") is a signature feature of Chinese railway station design: a broad open plaza meant to absorb passenger flow, especially during 春运 (Spring Festival travel rush). Before smartphones it was the default meeting point for anyone arriving in a city. Urban-planning critics call these plazas "visual showcases" that often sit empty outside holidays.
grammar
Three-part compound: 火车站 + 广场. You will see the same pattern for 机场广场 (airport plaza), 汽车站广场 (bus station plaza). 广场 by itself means "square/plaza"; compare 天安门广场 (Tiananmen Square).
