Description
Historical visualization of subway system development, showing how underground transit networks grew over time. Animated maps of subway expansion — such as the New York City MTA system growing from its first line in 1904 to today's 472-station network — reveal how cities invested in public infrastructure across decades. These visualizations use timeline animation to show stations and lines appearing in chronological order, making visible the political and engineering decisions that shaped urban transit. A well-known example is the WNYC/John Tauranac visualization of NYC subway history.