Beijing Subway, Rapid transit in Beijing
The Beijing Subway is the world's busiest and second longest metro system.
Operations began in 1971 as China's first rapid transit system.
The subway system demonstrates a blend of traditional Chinese culture with modernity.
Serves over 10 million passengers daily, easing Beijing's traffic congestion.
Features an ancient city wall of Yuan Dynasty at Chongwenmen station.
Location: Beijing
Location: Langfang
Inception: 1971
Official opening: October 1, 1969
Website: bjsubway.com
Source: Wikimedia