I only had one day to visit New York city after my New England Cruise. We took the subway from New Jersey to 33rd street stop to look around Time Square. Then we took "N" subway and got off at Canal street to visit Chinatown, walked on Mulberry street which is Little Italy and then walked back to WTC sub station to take the bus back to Jersey city. If we had time, we would have taken the subway to Central Park. If you have time, try a Broadway show.