Title - World’s 30 best metro rail systems

In a major breather for the five million people of Pune, the Maharashtra government has given the green signal for the state's second Metro rail project after Mumbai here, a top official said. Here's a look at the world's 30 best metro stations

London
The Underground system is also colloquially called the Tube. As commonly used today both by Londoners and in most official publicity, this term embraces the entire system