In all the world, the longest subway
tunnel is more than eighteen miles long! It is from a subway system called
Moscow Metro. It carries almost 6.5 million people per day!
47 acres is how much land Grand Central
Station covers on Manhattan Island. In New York it is the biggest railroad
station in the world.
Japan has the world's busiest rail network.
It can carry almost 12% of it's population! It's almost 32 miles long!
In 1838 the first subway was built in London.