Winter is an excellent time to go to Europe. There are next to no lines for the museums, you can experience the cities like the locals do and everything is cheaper! Plus, Christmas and New Year's Eve in Europe are very special.
If you like walking and or using a subway system then this is for you. You get to see September 11 Site, Statue of Liberty, Empire States Building, CBS Morning Show where you are part of the crowd. Its 3 days of New York jammed packed