On the west coast there's a lot of beautiful attractions. My plan is to go to Havasu Falls in the Grand Canyon and then take good ole' route 66 (even though now there's another, faster highway) to Big Sur and then work my way through California.
But there's a lot of genuinely beautiful attractions on the west coast if nature if what you're into.
If it's city life and luxury you want, I definitely recommend Vegas. You can get lots of hustle, luxury, and REALLY cool shows for cheap there if you plan ahead. (We didn't plan ahead at all and ended up getting discounted tickets to Cirque)
I can't vouch for New York, but I know it's huge and there is lots to do there too. But, since I like nature more than city life, I'll opt for suggesting the West coast.