We walked from Brooklyn where we were staying to Brooklyn Bridge and though we could of got a cab we thought walking there and across the bridge was a nice way to see the local area.
It was a lovely but arduous walk but I think this was made harder due to the heat wave. The bridge itself allows you to see a picturesque view of New York from either side. It gets very busy with both pedestrians, tourists and bike riders But you can take some lovely photos from there too and truly walk at your own leisurely pace to really absorb the atmosphere.