the musts of classic new york: visit the empire state building, amazing view, really! go to the guggenheim, the moma, the rockefeller center, flatiron building near union square, ... and all the other "classics".. don´t visit the statue of liberty, not worth doin´that!
we recommend: take a break in the beautiful bryant park, that´s nice, walk through grand central station, visit one or two of new yorks churches, feels like in europe. go to columbus circle and take a picture like the beastie boys.... go to noho, soho, greenwich village and harlem, where the underground train gets an overground train, there you can see the old construction of 1904 or so. take a ride through brooklyn, and most important: WALK over brooklyn bridge (1.8km), 100 times better than driving...