Interesting Facts about Metro

There are currently approximate 190 city has metro systems in 54 countries around the world. it is really amazing intresting facts of the World wide metro trains. 
 
The world's first metro system to be built solely for the use of religious pilgrims, is the 18.1 km long Al Mashaaer Al Muqaddassah Metro, which opened in November 2010 in Saudi Arabia's holy city of Mecca. 
The world's first metro, now the world's oldest system, is the London Underground in England,
The world's longest metro system is the Shanghai Metro in China at 434 kilometers long. The system also incorporates the world's only ' tourist tunnel', also check here top 10 interesting facts about Jaipur metro rail
Interesting Facts about Metro
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Interesting Facts about Metro

Facts about metro rail
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