NYC - Gotta love the place where you're born
Los Angeles - Damn, I wish I was still living there
Krakow - Amazing historical city, probably one of the nicest in all of Europe IMO
Zakopane - During the winter, has one of the nicest ski areas in the Tatra mountains
Athens - enjoyed the climate and food

Although there are many other places I have been to, I think these are the top of the list on my favorites