Rapid transit system in Athens, Greece
Rapid transit system in Barcelona, Spain
Subway network in Beijing, China
Rapid transit system in Berlin
Scenic rail journey in the Swiss Alps
Historic mountain railway in the Alps
Metro system in Budapest, Hungary
Underground metro system in Buenos Aires, Argentina
Rapid transit system in Cairo, Egypt
Long-distance train in the US
Historic Canadian railroad
Rapid transit system in Delhi, India
Third-oldest underground metro system
National railway system of India
Rapid transit system in Istanbul, Turkey
