The ancient capital of Beijing opened its first electric tramway in June 1921. In five years it would expand to five lines, and it survived the Chinese Civil War to reach a peak in 1957. However, laying new tram track proved difficult for the rapidly growing city, and planners opted for trolleybuses instead as a solution. By 1966, the last tram line between Yongdingmen and Beijing Gymnasium ceased operation.
Today home to nearly twenty-five million people, Beijing has experienced a revolutionary renewal into a global city in the last three decades. Along with that growth, its sprawling metro system has grown to rank first in the world by daily passenger volume, serving an average of ten million trips per day.