There is obviously a TON of amazing cityscapes to see from the sky and most of them give you a different perspective on every day things. Seeing skyscrapers from above is one thing but seeing bridges and rivers is another. For whatever reason, you really get a sense of scale with these things over the typical jaw dropping Freedom Tower and Empire State Building.
I've crossed these bridges a million times and they're always so huge from deck level and even walking across the Brooklyn or Manhattan bridge can take you a half hour sometimes. From a helicopter with FlyNYON though it's just a breeze to cross from one side to the other and to completely dwarf the towers of the bridges. Even when you think about the East River itself, it looks like a puddle from 1,500ft up but when you're looking over the edge of the Manhattan Bridge, it's crazy to think that you could die if you jumped off.
These different aspects of our everyday world are one of the many things that make aerial photography such a unique experience. Every photographer should try it, it'll change the way you think about everything.