New York City is an amazing place. I've been many times and never get bored of it- just such a fascinating city.
Boston is my hometown, so I'm partial to it, but it's really pretty and very walkable. Also a lot of cool history.
D.C. is also great. I love the layout of the city.
SF (and the surrounding suburbs) are beautiful.
Phoenix has amazing weather and landscapes.
Miami has fantastic culture and beaches.
One of the most beautiful cities in the world. Diverse cultures, cool neighborhoods, and friendly people surrounded by amazing beaches and breathtaking mountains. And the weather It's literally paradise