Never really fancied America but you just have to go to New York City once in your life. Shopping, the sights, the theatre. Go up the Empire State Building, The Chrysler Building and the Statue of Liberty (even if it isn't in New York State!
New York New York by Sophie Henson is another poster design that quite appealed to me. This is because of the different amount of type fonts all in one place. Also the different colours complement each other and work really well as a final design outcome.