Linking Manhattan with Brooklyn this bridge is really worth a visit as it's pretty much a tourist attraction in itself, being one of the more famous NYC landmarks. It's a functional bridge so obviously it's free and easy to find! Part of a visit to NY is trying to get the best views of the skyline and this is a great spot!
There's a pedestrian section built overhead the cars section and it's worth walking all the way to the Brooklyn side to bag one hell of a spectacular view of Manhattan. It's near lower Manhattan so you'll be able to see the Statue of Liberty in the distance and a great view
of the World Trade Center and other local skyscrapers. The cars zooming underneath will add to the New York buzz too. The bridge is easy to get to by bus or subway.