8 Awe-Inspiring Mass Transit Systems that Changed Their Cities

At the heart of many cities are its public transit systems, which help people get to work and get out of town. Some of the greatest public transit systems aren't just large — they also offer their riders something extra, or reshape the cities they serve. Here are some incredible public transit systems around the world. » 4/28/14 1:38pm 4/28/14 1:38pm