Metro Trains

New York City's metro system is one of the largest metro systems in the world. It has over 100 connections, and many types of trains in its MTA system.

You may be asking why I am adding Bart metro of San Francisco. Well, these trains are not unique, but some old ones do have curved fronts and off-center windows, similar to the cool Sao Paulo metro trains. So, Barts are cool too. But, as you can see, the Bart trains are very dirty, just like the whole San Francisco transit system.

This is probably the first metro in the world. And it started with steam trains underground! Now, it has blossomed into a giant system with not only Underground trains, but also a London Overground system.

This is a big metro system that goes to many stations. These trains go to famous places like the Tuileries, and other cool monuments.

Moscow's metro systems have the most beautiful stations in the world. They are literally stunning, and they also have a lot of art in them too! The picture I added here is actually a subway stop.