4. The Staten Island Ferry Route is the Busiest in the United States

Carrying over 22 million passengers per year the ferry ride between Manhattan and Staten Island is the single busiest route in the entirety of the United States and it isn’t hard to see why. When you combine commuters and tourists, it isn’t hard to imagine why people would want to use it. That and the fact that it is the only way to get from Staten Island to Manhattan, and vice versa, without a car.